[manual backport stable-5] Fix CI Test Collision (#1162) (#1166)

* Fix CI Test Collision (#1162)

* Fix CI concurrency issue

* More CI fixes

* Fix coverage job install

* Install correct test dependencies

(cherry picked from commit d211f316ad)

* Restore cancel-in-progress: true

.github/workflows/unit-tests.yaml

@@ -1,14 +1,6 @@
 name: Unit tests
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
 
-on:
-  workflow_call:
-  pull_request:
-    branches:
-      - main
-      - stable-*
+on: [workflow_call]
 
 jobs:
   unit-source: