build(deps): bump actions/cache from 3 to 4

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]>

.github/workflows/ci.yml

@@ -45,7 +45,7 @@ jobs:
           echo "CACHE=${{ secrets.CACHE_DATE }} ${{ runner.os }} $(python -VV |
           sha256sum | cut -d' ' -f1) ${{ hashFiles('pyproject.toml') }} ${{
           hashFiles('poetry.lock') }}" >> $GITHUB_ENV
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: |
             .cache.~
@@ -85,7 +85,7 @@ jobs:
     steps:
       # Set up Docker Environment
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: |
             /tmp/.buildx-cache