Publish release images from release-* branches

The release-12 lineage still gated build_release_images on master only, so
pushes to release-12 produced -dev- tags instead of -v tags. Match the
release-13/release-14 behaviour by also releasing from release-* branches
and skipping the dev jobs there.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 7c6370b2-06fd-4491-bf92-ecb811d34518

Author: ihalatci

.github/workflows/build-test-images.yml

@@ -20,7 +20,7 @@ jobs:
       pgversions: ${{ toJSON(steps.get_versions.outputs.*) }}
 
   build_dev_images_per_postgres:
-    if: github.ref_name != 'master'
+    if: github.ref_name != 'master' && !startsWith(github.ref_name, 'release-')
     name: push-test-images-for-dev
     runs-on: ubuntu-latest
     permissions:
@@ -54,7 +54,7 @@ jobs:
           make push-${{ matrix.command }}-${{ matrix.pgversion }}
 
   build_dev_images_shared:
-    if: github.ref_name != 'master'
+    if: github.ref_name != 'master' && !startsWith(github.ref_name, 'release-')
     name: push-test-images-for-dev
     runs-on: ubuntu-latest
     permissions:
@@ -86,7 +86,7 @@ jobs:
 
 
   build_release_images:
-    if: github.ref_name == 'master'
+    if: github.ref_name == 'master' || startsWith(github.ref_name, 'release-')
     name: push-test-images-for-release
     runs-on: ubuntu-latest
     permissions: