Bump actions/cache from 4 to 5 (#619)

Author: dependabot[bot]

.github/workflows/docs.yml

@@ -92,7 +92,7 @@ jobs:
           cat requirements-full.txt
 
       - name: Setup caching for conda packages
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/conda_pkgs_dir
           key: conda-${{ runner.os }}-${{ env.PYTHON }}-${{ hashFiles('requirements-full.txt') }}

.github/workflows/test.yml

@@ -112,7 +112,7 @@ jobs:
           echo "dir="$(pip cache dir) >> $GITHUB_OUTPUT
 
       - name: Setup caching for pip packages
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ${{ steps.pip-cache.outputs.dir }}
           key: ${{ runner.os }}-pip-${{ hashFiles('requirements-full.txt') }}