chore(deps): update actions/cache action to v5 (#157)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci-docs.yml

@@ -16,7 +16,7 @@ jobs:
           persist-credentials: false
 
       - name: Restore pollux cache
-        uses: actions/cache/restore@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
+        uses: actions/cache/restore@9255dc7a253b0ccc959486e2bca901246202afeb # v5
         with:
           key: ${{ runner.os }}-pollux-cache
           path: /home/runner/.pollux
@@ -53,7 +53,7 @@ jobs:
         uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e # v4.0.5
 
       - name: Save pollux cache
-        uses: actions/cache/save@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
+        uses: actions/cache/save@9255dc7a253b0ccc959486e2bca901246202afeb # v5
         with:
           key: ${{ runner.os }}-pollux-cache
           path: /home/runner/.pollux