fix(github): re-add workflow, weird syntax bug?

.github/workflows/maven.yml

@@ -6,20 +6,22 @@ name: Java CI with Maven
 on:
   push:
     branches: [ "main" ]
-    pull_request:
-      branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
 
 jobs:
   build:
+
     runs-on: ubuntu-latest
+
     steps:
     - uses: actions/checkout@v3
     - name: Set up JDK 11
-    uses: actions/setup-java@v3
-    with:
-      java-version: '11'
-      distribution: 'temurin'
-      cache: maven
-        - name: Build with Maven
+      uses: actions/setup-java@v3
+      with:
+        java-version: '11'
+        distribution: 'temurin'
+        cache: maven
+    - name: Build with Maven
       run: mvn -B package --file pom.xml
-    
+