Bump actions/cache from 4.1.1 to 4.2.0

Bumps [actions/cache](https://github.com/actions/cache) from 4.1.1 to 4.2.0.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v4.1.1...v4.2.0)

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

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

.github/workflows/ci.yml

@@ -46,7 +46,7 @@ jobs:
           python-version: ${{ env.DEFAULT_PYTHON }}
       - name: Restore Python virtual environment
         id: cache-venv
-        uses: actions/cache@v4.1.1
+        uses: actions/cache@v4.2.0
         with:
           path: venv
           # yamllint disable-line rule:line-length
@@ -302,14 +302,14 @@ jobs:
 
       - name: Cache platformio
         if: github.ref == 'refs/heads/dev'
-        uses: actions/cache@v4.1.1
+        uses: actions/cache@v4.2.0
         with:
           path: ~/.platformio
           key: platformio-${{ matrix.pio_cache_key }}
 
       - name: Cache platformio
         if: github.ref != 'refs/heads/dev'
-        uses: actions/cache/restore@v4.1.1
+        uses: actions/cache/restore@v4.2.0
         with:
           path: ~/.platformio
           key: platformio-${{ matrix.pio_cache_key }}