ci(deps): bump actions/cache from 4 to 5

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>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -102,7 +102,7 @@ jobs:
           echo "timestamp=$(/bin/date -u '+%Y%m%d%H%M%S')" >> $GITHUB_OUTPUT
 
       - name: Cache Numba Kernels
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           key: numba-cache-${{ matrix.python-version }}-${{ steps.numba-key.outputs.timestamp }}
           restore-keys: numba-cache-${{ matrix.python-version }}-
@@ -113,7 +113,7 @@ jobs:
 
       - name: Load cached CASA Measures Data
         id: load-cached-casa-measures
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           key: casa-measures-${{ hashFiles('measures_dir.txt')}}
           path: |