Configure and enable bors (#14383)

* Update build-test-debug.yml

* Update build-test-release.yml

* Update test-packaging.yml

* Update validate_mapfiles.yml

* Update yaml-linter.yml

* Update validate-rsis.yml

* Update validate-rgas.yml

* Create bors.toml

.github/workflows/validate_mapfiles.yml

@@ -1,6 +1,7 @@
 name: YAML schema validator
 on:
   push:
+    branches: [ master, staging, trying ]
   merge_group:
   pull_request:
     types: [ opened, reopened, synchronize, ready_for_review ]