Include whitespace check in 'make' and 'make ws'

Also use 'make ws' in github action.

Follow up to #2603

Author: denik

.github/workflows/push.yml

@@ -114,7 +114,7 @@ jobs:
           # Exit with status code 1 if there are differences (i.e. unformatted files)
           git diff --exit-code
       - name: Run whitespace check
-        run: python tools/validate_whitespace.py
+        run: make ws
 
   validate-bundle-schema:
     needs: cleanups

Makefile

@@ -1,4 +1,4 @@
-default: vendor fmt lint tidy
+default: vendor fmt lint tidy ws
 
 PACKAGES=./acceptance/... ./libs/... ./internal/... ./cmd/... ./bundle/... .
 
@@ -20,6 +20,9 @@ fmt:
 	ruff format -qn
 	golangci-lint fmt
 
+ws:
+	./tools/validate_whitespace.py
+
 test:
 	${GOTESTSUM_CMD} -- ${PACKAGES}