Bump actions/cache from 3.0.6 to 3.0.8 (#1014)

Bumps [actions/cache](https://github.com/actions/cache) from 3.0.6 to 3.0.8.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](https://github.com/actions/cache/compare/v3.0.6...v3.0.8)

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

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci.yaml

@@ -29,7 +29,7 @@ jobs:
 
     - name: Restore Python ${{ env.DEFAULT_PYTHON }} virtual environment
       id: cache-venv
-      uses: actions/cache@v3.0.6
+      uses: actions/cache@v3.0.8
       with:
         path: venv
         key: >-
@@ -88,7 +88,7 @@ jobs:
 
     - name: Restore Python ${{ matrix.python-version }} virtual environment
       id: cache-venv
-      uses: actions/cache@v3.0.6
+      uses: actions/cache@v3.0.8
       with:
         path: venv
         key: >-
@@ -128,7 +128,7 @@ jobs:
 
     - name: Cache PMS Docker image
       id: docker-cache
-      uses: actions/cache@v3.0.6
+      uses: actions/cache@v3.0.8
       with:
         path: ~/.cache/docker/plexinc
         key: ${{ runner.os }}-docker-pms-${{ steps.docker-digest.outputs.digest }}
@@ -224,7 +224,7 @@ jobs:
 
     - name: Restore Python ${{ env.DEFAULT_PYTHON }} virtual environment
       id: cache-venv
-      uses: actions/cache@v3.0.6
+      uses: actions/cache@v3.0.8
       with:
         path: venv
         key: >-