Bump compile version to 11.

Author: mpmadhavig

.github/workflows/pr-builder.yml

@@ -18,11 +18,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - name: Set up Adopt JDK 8
-        uses: actions/setup-java@v2
+      - uses: actions/checkout@v4
+      - name: Set up Adopt JDK 11
+        uses: actions/setup-java@v4
         with:
-          java-version: "8"
+          java-version: "11"
           distribution: "adopt"
       - name: Cache local Maven repository
         id: cache-maven-m2