Clearly define supported Python versions policy (#633)

* Clearly define supported Python versions.

Support policy based on author's comment on https://github.com/domainaware/parsedmarc/pull/458#issuecomment-2002516299 #458

* Compile Python 3.6 as Ubuntu latest run against Ubuntu 24.04 which haven't Python3.6 + 20.04 is no longer available
https://raw.githubusercontent.com/actions/python-versions/main/versions-manifest.json

* Use latest versions of GH Actions

* Silent some technicals GH Actions steps

* Elasticsearch / opensearch: use supported versions + align used versions

* Delete .github/workflows/python-tests-3.6.yml

Drop Python 3.6 test

* Update Python 3.6 support status in README

---------

Co-authored-by: Sean Whalen <44679+seanthegeek@users.noreply.github.com>

.github/workflows/docker.yml

@@ -24,11 +24,11 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v5
 
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v3
+        uses: docker/metadata-action@v5
         with:
           images: |
             ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
@@ -40,16 +40,14 @@ jobs:
             type=semver,pattern={{major}}.{{minor}}
 
       - name: Log in to the Container registry
-        # https://github.com/docker/login-action/releases/tag/v2.0.0
+        uses: docker/login-action@v3
-        uses: docker/login-action@49ed152c8eca782a232dede0303416e8f356c37b
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and push Docker image
-        # https://github.com/docker/build-push-action/releases/tag/v3.0.0
+        uses: docker/build-push-action@v6
-        uses: docker/build-push-action@e551b19e49efd4e98792db7592c17c09b89db8d8
         with:
           context: .
           push: ${{ github.event_name == 'release' }}

.github/workflows/python-tests.yml

@@ -15,7 +15,7 @@ jobs:
 
     services:
       elasticsearch:
-        image: elasticsearch:8.18.2
+        image: elasticsearch:8.19.7
         env:
           discovery.type: single-node
           cluster.name: parsedmarc-cluster
@@ -30,18 +30,19 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        # Python 3.6 run on a previous Ubuntu
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install system dependencies
       run: |
-        sudo apt-get update
+        sudo apt-get -q update
-        sudo apt-get install -y libemail-outlook-message-perl
+        sudo apt-get -qy install libemail-outlook-message-perl
     - name: Install Python dependencies
       run: |
         python -m pip install --upgrade pip
@@ -65,6 +66,6 @@ jobs:
       run: |
         hatch build
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
           token: ${{ secrets.CODECOV_TOKEN }}

README.md

@@ -23,11 +23,10 @@ ProofPoint Email Fraud Defense, and Valimail.
 
 ## Help Wanted
 
-This project is maintained by one developer. Please consider
+This project is maintained by one developer. Please consider reviewing the open
-reviewing the open
+[issues](https://github.com/domainaware/parsedmarc/issues) to see how you can
-[issues](https://github.com/domainaware/parsedmarc/issues) to see how
+contribute code, documentation, or user support. Assistance on the pinned
-you can contribute code, documentation, or user support. Assistance on
+issues would be particularly helpful.
-the pinned issues would be particularly helpful.
 
 Thanks to all
 [contributors](https://github.com/domainaware/parsedmarc/graphs/contributors)!
@@ -42,6 +41,24 @@ Thanks to all
 - Consistent data structures
 - Simple JSON and/or CSV output
 - Optionally email the results
-- Optionally send the results to Elasticsearch, Opensearch, and/or Splunk, for use
+- Optionally send the results to Elasticsearch, Opensearch, and/or Splunk, for
-    with premade dashboards
+  use with premade dashboards
 - Optionally send reports to Apache Kafka
+
+## Python Compatibility
+
+This project supports the following Python versions, which are either actively maintained or are the default versions
+for RHEL or Debian.
+
+| Version | Supported | Reason                                                     |
+|---------|-----------|------------------------------------------------------------|
+| < 3.6   | ❌         | End of Life (EOL)                                          |
+| 3.6     | ❌         | Not supported by project dependencies                      | 
+| 3.7     | ❌         | End of Life (EOL)                                          | 
+| 3.8     | ❌         | End of Life (EOL)                                          | 
+| 3.9     | ✅         | Supported until August 2026 (Debian 11); May 2032 (RHEL 9) | 
+| 3.10    | ✅         | Actively maintained                                        | 
+| 3.11    | ✅         | Actively maintained; supported until June 2028 (Debian 12) | 
+| 3.12    | ✅         | Actively maintained; supported until May 2035 (RHEL 10)    | 
+| 3.13    | ✅         | Actively maintained; supported until June 2030 (Debian 13) | 
+| 3.14    | ✅         | Actively maintained                                        | 

docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   elasticsearch:
-    image: docker.elastic.co/elasticsearch/elasticsearch:8.3.1
+    image: docker.elastic.co/elasticsearch/elasticsearch:8.19.7
     environment:
       - network.host=127.0.0.1
       - http.host=0.0.0.0
@@ -28,7 +28,7 @@ services:
       retries: 24
 
   opensearch:
-    image: opensearchproject/opensearch:2.18.0
+    image: opensearchproject/opensearch:2
     environment:
       - network.host=127.0.0.1
       - http.host=0.0.0.0