Switch workflow to JDK 11 for KSP compatibility

Author: JoeBuildsThings

.github/workflows/build.yml

@@ -13,10 +13,10 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Set up JDK 17
+      - name: Set up JDK 11
         uses: actions/setup-java@v4
         with:
-          java-version: '17'
+          java-version: '11'
           distribution: 'temurin'
 
       - name: Grant execute permission for gradlew