Update CACHE_VERSION of primer, add comment and update paths (#5611)

Co-authored-by: Marc Mueller <[email protected]>

Author: DanielNoord

.github/workflows/ci.yaml

@@ -8,6 +8,7 @@ on:
   pull_request: ~
 
 env:
+  # Also change CACHE_VERSION in the primer workflow
   CACHE_VERSION: 4
   DEFAULT_PYTHON: 3.8
   PRE_COMMIT_CACHE: ~/.cache/pre-commit

.github/workflows/primer-test.yaml

@@ -10,9 +10,11 @@ on:
       - "pylint/**"
       - "tests/primer/**"
       - "requirements*"
+      - ".github/workflows/primer-test.yaml"
 
 env:
-  CACHE_VERSION: 3
+  # Also change CACHE_VERSION in the CI workflow
+  CACHE_VERSION: 4
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}