chore: update coverage exclusions

Author: smlx

.github/workflows/coverage.yaml

@@ -17,8 +17,8 @@ jobs:
     - name: Calculate coverage
       run: |
         go test -v -covermode=atomic -coverprofile=cover.out.raw -coverpkg=./... ./...
-        # remove mocks from coverage calculation
-        grep -Ev 'mock_|_enumer.go' cover.out.raw > cover.out
+        # remove generated code from coverage calculation
+        grep -Ev 'internal/mock|_enumer.go' cover.out.raw > cover.out
     - name: Generage coverage badge
       uses: vladopajic/go-test-coverage@97ecc524075d8ece0e1a406edec1c191e2dd3277 # v2.8.3
       with: