Update git-pr-status-checks.yml (#21)

Author: wchomik

.github/workflows/git-pr-status-checks.yml

@@ -4,7 +4,7 @@ on:
   pull_request: {}
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  group: ${{ github.event.pull_request.head.repo.full_name }}-${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
 
 permissions:
@@ -17,4 +17,4 @@ permissions:
 
 jobs:
   pr-status-check:
-    uses: "openmcp-project/blueprint-workflows/.github/workflows/git-pr-status-checks.yml@main"
+    uses: "openmcp-project/blueprint-workflows/.github/workflows/git-pr-status-checks.yml@main"