Updates CI workflow to support main branch

Expands CI triggers and release conditions to include both main and master branches.
Ensures workflows run consistently as the repository transitions or supports main as the default branch.

Relates to MLO-469

.github/workflows/ci.yaml

@@ -2,10 +2,10 @@ name: CI
 
 on:
   push:
-    branches: [master]
+    branches: [main, master]
     tags: ["v*"]
   pull_request:
-    branches: [master]
+    branches: [main, master]
   schedule:
     - cron: 0 4 * * *
 
@@ -42,7 +42,7 @@ jobs:
     name: Release processor image
     runs-on: ubuntu-latest
     needs: test
-    if: github.event_name == 'push' && (startsWith(github.ref, 'refs/tags/v') || github.ref == 'refs/heads/master')
+    if: github.event_name == 'push' && (startsWith(github.ref, 'refs/tags/v') || github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master')
     steps:
       - name: Checkout commit
         uses: actions/checkout@v4