Update gradle.yml

Author: JavaSaBr

.github/workflows/gradle.yml

@@ -8,9 +8,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@latest
+    - uses: actions/checkout@v1
     - uses: joschi/setup-jdk@v1
-      with: 
+      with:
         java-version: 'openjdk13'
         architecture: 'x64'
     - name: Build with Gradle