Merge pull request #56 from ashtanko/renovate/actions-cache-5.x

Update actions/cache action to v5

Author: ashtanko

.github/workflows/ci.yml

@@ -35,7 +35,7 @@ jobs:
         run: flutter --version
 
       - name: Cache pub dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ${{ env.HOME }}/.pub-cache
           key: ${{ runner.os }}-pub-${{ hashFiles('**/pubspec.lock') }}