use actions version v3

Author: Horcrux7

.github/workflows/build.yml

@@ -7,9 +7,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up JDK 8
-      uses: actions/setup-java@v2
+      uses: actions/setup-java@v3
       with:
         java-version: '8'
         distribution: 'adopt'