ci: bump action version

Signed-off-by: Shengqi Chen <[email protected]>

Author: Harry-Chen

.github/workflows/example-app.yml

@@ -17,8 +17,8 @@ jobs:
         variant: [debug, release]
 
     steps:
-    - uses: actions/checkout@v4
-    - uses: actions/setup-java@v4
+    - uses: actions/checkout@v5
+    - uses: actions/setup-java@v5
       with:
         distribution: 'temurin'
         java-version: '21'
@@ -49,7 +49,7 @@ jobs:
         variant: [debug, release]
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - uses: subosito/flutter-action@v2
       with:
         channel: 'stable'