fix(ci): muted warnings in CI runs due to cache conflicts

Every time a job is posted, I received false alarm failure notifications
because of some cache conflict during the linting job.

Reference: golangci/golangci-lint-action#807

* fixed code coverage on all sub packages

Signed-off-by: Frederic BIDON <fredbi@yahoo.com>

.github/workflows/go-test.yml

@@ -18,6 +18,7 @@ jobs:
         with:
           version: latest
           only-new-issues: true
+          skip-cache: true
 
   test:
     name: Unit tests
@@ -38,7 +39,7 @@ jobs:
 
     - uses: actions/checkout@v3
 
-    - run: go test -v -race -coverprofile="coverage-${{ matrix.os }}.${{ matrix.go_version }}.out" -covermode=atomic ./...
+    - run: go test -v -race -coverprofile="coverage-${{ matrix.os }}.${{ matrix.go_version }}.out" -covermode=atomic -coverpkg=$(go list)/... ./...
 
     - name: Upload coverage to codecov
       uses: codecov/codecov-action@v3