ci(workflows): Add 'dev_marc' branch to push trigger

Author: Marc-R2

.github/workflows/build.yml

@@ -2,7 +2,7 @@ name: Build
 on:
   # Trigger the workflow on pushes to only the 'main' branch (this avoids duplicate checks being run e.g. for dependabot pull requests)
   push:
-    branches: [main]
+    branches: [main, dev_marc]
   # Trigger the workflow on any pull request
   pull_request: