update action

Author: anikitin-top

.github/workflows/swift.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: macos-latest
     steps:
     - uses: actions/checkout@v2
-    - uses: actions/cache@v2
+    - uses: actions/cache@v4
       with:
         path: Pods
         key: ${{ runner.os }}-pods-${{ hashFiles('**/Podfile.lock') }}