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

Author: renovate[bot]

.github/workflows/tflint.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v4
         name: Checkout source code
 
-      - uses: actions/cache@v3
+      - uses: actions/cache@v5
         name: Cache plugin dir
         with:
           path: ~/.tflint.d/plugins