Change name of the concurrency group

Author: Claudenw

.github/workflows/manual.yml

@@ -42,7 +42,7 @@ permissions:
 # Disallow concurrent runs for the same PR by cancelling in-progress runs
 # when new commits are pushed
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  group: Manual_Build-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
 
 jobs: