Cancel test-all job is another commits get pushed in the same branch (#45568)

Summary:
CircleCI was automatically cancelling an old run if a new commit was pushed on the branch.
GitHub does not have the same behavior enabled by default.

Keep running jobs in a pipeline when there is a new commit is usually wasteful of resources and cost money we can save.

## Changelog:
[Internal] - Cancel old jobs if a new commit is pushed

Pull Request resolved: https://github.com/facebook/react-native/pull/45568

Test Plan: Tested on GHA on this PR

Reviewed By: blakef

Differential Revision: D60035940

Pulled By: cipolleschi

fbshipit-source-id: 88b4dfc8bdd3eded6489a87db285e9544d3a1bcf

.github/workflows/test-all.yml

@@ -8,6 +8,10 @@ on:
       - main
       - "*-stable"
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true # cancel previous runs
+
 jobs:
   set_release_type:
     runs-on: ubuntu-latest