build(deps): bump docker/setup-buildx-action from 3 to 4

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 3 to 4.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](https://github.com/docker/setup-buildx-action/compare/v3...v4)

---
updated-dependencies:
- dependency-name: docker/setup-buildx-action
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build.yml

@@ -141,7 +141,7 @@ jobs:
             org.opencontainers.image.authors=Geoff Bourne <itzgeoff@gmail.com>
 
       - name: Setup Docker Buildx
-        uses: docker/setup-buildx-action@v4.1.0
+        uses: docker/setup-buildx-action@v4
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v4.1.0

.github/workflows/sponsor-labeler.yml

@@ -1,4 +1,5 @@
-name: Label Sponsor Contributions
+name: Sponsor Labeler
+
 on:
   issues:
     types:
@@ -9,15 +10,7 @@ on:
 
 jobs:
   label-sponsor:
-    runs-on: ubuntu-latest
-    permissions:
-      pull-requests: write
-      issues: write
-
-    steps:
-      - name: Check if sponsor
-        uses: JasonEtco/is-sponsor-label-action@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          label: sponsor
+    uses: itzg/github-workflows/.github/workflows/sponsor-labeler.yml@main
+    with:
+      author: ${{ github.event.issue.user.login || github.event.pull_request.user.login }}
+      number: ${{ github.event.issue.number || github.event.pull_request.number }}

.github/workflows/verify-docs.yml

@@ -16,7 +16,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v4
 
       - name: Build docs image
         uses: docker/build-push-action@v6

.github/workflows/verify-pr.yml

@@ -59,7 +59,7 @@ jobs:
           fetch-depth: 0
 
       - name: Setup Docker Buildx
-        uses: docker/setup-buildx-action@v4.1.0
+        uses: docker/setup-buildx-action@v4
 
       - name: Confirm multi-arch build
         uses: docker/build-push-action@v7.2.0

scripts/start-utils

@@ -560,6 +560,17 @@ function extract() {
   # remaining args are paths within the archive to extract; if none, extract everything
 
   type=$(file -b --mime-type "${src}")
+  if [[ "$type" == application/octet-stream ]]; then
+      logWarning "Detected non-specific file type $type for $src"
+      case "$src" in
+        *.zip)
+          log "Assuming zip from extension"
+          type=application/zip
+          ;;
+        # otherwise fall through to
+      esac
+  fi
+
   case "${type}" in
   application/zip)
     unzip -o -q -d "${destDir}" "${src}" "$@"