fix(ci): remove workaround for hashFiles on macOS runners

- Removes custom file hash calculation step that was used to work around a GitHub Actions bug
- Simplifies cache key generation by using hashFiles function directly
- The workaround is no longer needed as the GitHub Actions issue has been resolved

References: actions/runner-images#13341

Author: flexiondotorg

.github/workflows/ffmpeg-release.yml

@@ -71,19 +71,11 @@ jobs:
         if: matrix.os == 'darwin'
         run: brew update && brew install yasm autoconf ragel meson nasm automake libtool python3
 
-      - name: Calculate file hashes
-        id: file-hashes
-        run: |
-          echo "libraries-hash=$(sha256sum internal/builder/libraries.go | cut -d' ' -f1 | head -c 8)" >> $GITHUB_OUTPUT
-          echo "buildsystems-hash=$(sha256sum internal/builder/buildsystems.go | cut -d' ' -f1 | head -c 8)" >> $GITHUB_OUTPUT
-
       - name: Cache FFmpeg source downloads
         uses: actions/cache@v4
         with:
           path: .build/downloads
-          # Workaround for GitHub Actions bug: https://github.com/actions/runner-images/issues/13341
-          # hashFiles() broken on macOS runners as of 2024-11-23, using calculated hash instead
-          key: ${{ runner.os }}-${{ runner.arch }}-ffmpeg-downloads-${{ matrix.os == 'darwin' && steps.file-hashes.outputs.libraries-hash || hashFiles('internal/builder/libraries.go') }}
+          key: ${{ runner.os }}-${{ runner.arch }}-ffmpeg-downloads-${{ hashFiles('internal/builder/libraries.go') }}
           restore-keys: |
             ${{ runner.os }}-${{ runner.arch }}-ffmpeg-downloads-
 
@@ -93,9 +85,7 @@ jobs:
           path: |
             .build/staging
             .build/build
-          # Workaround for GitHub Actions bug: https://github.com/actions/runner-images/issues/13341
-          # hashFiles() broken on macOS runners as of 2024-11-23, using calculated hash instead
-          key: ${{ runner.os }}-${{ runner.arch }}-ffmpeg-deps-${{ matrix.os == 'darwin' && format('{0}-{1}', steps.file-hashes.outputs.libraries-hash, steps.file-hashes.outputs.buildsystems-hash) || hashFiles('internal/builder/libraries.go', 'internal/builder/buildsystems.go') }}
+          key: ${{ runner.os }}-${{ runner.arch }}-ffmpeg-deps-${{ hashFiles('internal/builder/libraries.go', 'internal/builder/buildsystems.go') }}
           restore-keys: |
             ${{ runner.os }}-${{ runner.arch }}-ffmpeg-deps-