CI: Deploy for maintenance branches (preparation for RC1 for 2025.12)

Author: blckmn

.github/workflows/deploy-preview.yml renamed to .github/workflows/deploy.yml

@@ -1,12 +1,15 @@
-name: 'Preview Deployment'
+name: 'Deployment (PR and Push)'
 on:
   pull_request_target:
     types: [opened, synchronize, reopened]
     branches:
       - master
+      - '*-maintenance'
   push:
     branches:
       - master
+      - release
+      - '*-maintenance'
 
 jobs:
   # Job 1: Build the code (no secrets here)