ci: remove concurrency from workflow_call workflow

Author: rjaegers

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

@@ -4,10 +4,6 @@ name: Build, Push & Test
 on:
   workflow_call:
 
-concurrency:
-  group: ${{ github.ref }}-${{ github.workflow }}
-  cancel-in-progress: true
-
 permissions: {}
 
 jobs: