Bump actions/cache from 4 to 5 (#105)

Bumps [actions/cache](https://github.com/actions/cache) from 4 to 5.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v4...v5)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/ci_tests.yaml

@@ -24,7 +24,7 @@ jobs:
         uses: astral-sh/setup-uv@v7
         with:
           enable-cache: true
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         name: Define a cache for the virtual environment based on the dependencies lock file
         with:
           path: ./.venv

.github/workflows/publish-docs-on-master.yaml

@@ -23,7 +23,7 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
       - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         with:
           key: mkdocs-material-${{ env.cache_id }}
           path: .cache
@@ -33,7 +33,7 @@ jobs:
         uses: astral-sh/setup-uv@v7
         with:
           enable-cache: true
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         name: Define a cache for the virtual environment based on the dependencies lock file
         with:
           path: ./.venv