build(deps): bump docker/build-push-action from 6 to 7

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6 to 7.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v6...v7)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/docker.yml

@@ -61,7 +61,7 @@ jobs:
 
       - name: Build and push Docker image
         id: build-and-push
-        uses: docker/build-push-action@15560696de535e4014efeff63c48f16952e52dd1
+        uses: docker/build-push-action@d08e5c354a6adb9ed34480a06d141179aa583294
         with:
           push: true
           context: .

.github/workflows/tests.yml

@@ -314,7 +314,7 @@ jobs:
 
       - name: Build and push
         id: docker_build
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           push: false
           context: .

doc/090_participating.rst

@@ -166,7 +166,7 @@ The classical helpers for integration tests are, amongst others:
 - ``testListSnapshots(t, env.gopts, <n>)``: check that there are <n> snapshots in the repository
 - ``testRunCheck(t, env.gopts)``: check that the repository is sound and happy
 - the above mentioned ``rtest.OK()``, ``rtest.Equals()``, ``rtest.Assert()`` helpers
-- ``withCaptureStdout()`` and ``withTermStatus()`` wrappers: both functions are found in ``cmd/restic/integration_helpers_test.go`` for creating an environment where one can analyze the output created by the ``testRunXXX()`` command, particularly when checking JSON output
+- ``withCaptureStdout()`` and ``withTermStatus()`` wrappers: both functions are found in ``cmd/restic/integration_helpers_test.go`` for creating an enviroment where one can analyze the output created by the ``testRunXXX()`` command, particularly when checking JSON output
 
 Integration tests test the overall workings of a command. Integration tests are used for commands and
 are stored in the same directory ``cmd/restic``. The recommended naming convention is