chore: upgrade actions

.github/workflows/flutter.yml

@@ -10,7 +10,7 @@ jobs:
     name: Build Android
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Decode Keystore and Create key.properties
       env:
           PROPERTIES_PATH: ${{ github.workspace }}/android/key.properties
@@ -21,7 +21,7 @@ jobs:
         echo keyAlias=\${{secrets.PLAY_KEY_ALIAS}} >> ${{env.PROPERTIES_PATH}}
         echo storeFile=\${{env.STORE_PATH}} >> ${{env.PROPERTIES_PATH}}
         echo "${{ secrets.PLAY_UPLOAD_KEYSTORE }}" | base64 --decode > ${{env.STORE_PATH}}
-    - uses: actions/setup-java@v2
+    - uses: actions/setup-java@v3
       with:
         distribution: 'zulu'
         java-version: '17'
@@ -37,7 +37,7 @@ jobs:
     name: Build iOS
     runs-on: macos-13 # required for xcode 15, macos-latest does not yet support it, compare https://github.com/maxim-lobanov/setup-xcode/issues/73
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: maxim-lobanov/setup-xcode@v1
       with:
         xcode-version: '15.1'