Bump actions/cache from 4 to 5 (#500)

Author: dependabot[bot]

.github/workflows/docs.yml

@@ -87,7 +87,7 @@ jobs:
 
 
       - 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') }}

.github/workflows/test.yml

@@ -119,7 +119,7 @@ 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') }}