Build & deploy: add branch sustaining/15.2.x (#925)

Author: vharseko

.github/workflows/build.yml

@@ -3,7 +3,7 @@ name: Build
 on:
   push:
   pull_request:
-    branches: [ 'master','release/16.0.0-SNAPSHOT' ]
+    branches: [ 'sustaining/15.2.x','master' ]
 
 jobs:
   build-maven:

.github/workflows/deploy.yml

@@ -3,7 +3,7 @@ name: Package/Deploy
 on:
   workflow_dispatch:
   workflow_run:
-    branches: [ 'master','release/16.0.0-SNAPSHOT' ]
+    branches: [ 'sustaining/15.2.x','master' ]
     workflows: ["Build","Release"]
     types: [completed]
 jobs:

.github/workflows/release.yml

@@ -26,7 +26,7 @@ jobs:
       - name: Set up Java for publishing to Maven Central Repository OSS
         uses: actions/setup-java@v4
         with:
-          java-version: '11'
+          java-version: ${{ github.event.workflow_run.head_branch == 'sustaining/15.2.x' && '8' || '11'}}
           distribution: 'zulu'
           server-id: ossrh
           server-username: MAVEN_USERNAME