build(deps): bump actions/cache in /workflow-templates/.github/workflows

Bumps [actions/cache](https://github.com/actions/cache) from 3 to 4.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v3...v4)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

workflow-templates/.github/workflows/extension-test.yml

@@ -99,7 +99,7 @@ jobs:
           fi
 
       - name: Cache quibble docker image
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: /home/runner/docker-images/${{ env.QUIBBLE_DOCKER_IMAGE }}
           key: ${{ env.QUIBBLE_DOCKER_IMAGE }}:${{ env.QUIBBLE_DOCKER_LATEST_TAG }}
@@ -112,13 +112,13 @@ jobs:
           fi
       - name: Cache quibble coverage docker image
         if: matrix.stage == 'coverage'
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: /home/runner/docker-images/${{ env.COVERAGE_DOCKER_IMAGE }}
           key: ${{ env.COVERAGE_DOCKER_IMAGE }}:${{ env.COVERAGE_DOCKER_LATEST_TAG }}
       - name: Cache phan docker image
         if: matrix.stage == 'phan'
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: /home/runner/docker-images/${{ env.PHAN_DOCKER_IMAGE }}
           key: ${{ env.PHAN_DOCKER_IMAGE }}:${{ env.PHAN_DOCKER_LATEST_TAG }}
@@ -140,7 +140,7 @@ jobs:
           fi
 
       - name: Cache MediaWiki installation
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: /home/runner/src
           key: ${{ runner.os }}-${{ env.MEDIAWIKI_VERSION }}-${{ hashFiles('.github/workflows/dependencies') }}
@@ -207,7 +207,7 @@ jobs:
           git -C src/ log -n 1 --format="%H"
 
       - name: Cache dependencies (composer and npm)
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: /home/runner/cache
           key: ${{ runner.os }}-${{ env.MEDIAWIKI_VERSION }}-${{ hashFiles('**/*.lock') }}