Update generate.yml

Author: brendandburns

.github/workflows/generate.yml

@@ -25,7 +25,7 @@ jobs:
         uses: actions/setup-java@v3
         with:
           distribution: 'temurin'
-          java-version: 8.0.x
+          java-version: 11
       - name: Checkout Gen
         uses: actions/checkout@v3
         with: