cicd: cancel previous workflow on commit (#327)

* cicd: cancel previous workflow on commit

* cicd: use concurrency for all jobs

---------

Co-authored-by: Konrad Dysput <konrad.dysput@saucelabs.com>

Author: konraddysput

.github/workflows/test.yml

@@ -5,6 +5,10 @@ on:
         branches: [main, dev]
     pull_request:
 
+concurrency:
+    group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+    cancel-in-progress: true
+
 jobs:
     test_linux_all:
         runs-on: ubuntu-latest