Update Java on CI to 11

Author: michaelbull

.github/workflows/ci.yaml

@@ -44,7 +44,7 @@ jobs:
         uses: actions/setup-java@c5195efecf7bdfc987ee8bae7a71cb8b11521c00 # v4.7.1
         with:
           distribution: zulu
-          java-version: 8
+          java-version: 11
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@06832c7b30a0129d7fb559bcc6e43d26f6374244 # v4.3.1
@@ -107,7 +107,7 @@ jobs:
         uses: actions/setup-java@c5195efecf7bdfc987ee8bae7a71cb8b11521c00 # v4.7.1
         with:
           distribution: zulu
-          java-version: 8
+          java-version: 11
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@06832c7b30a0129d7fb559bcc6e43d26f6374244 # v4.3.1