Fix codecov-action params (#349)

* `functionalities` param is no longer exist.
  It was used to enable file fixes to ignore common lines from coverage.
  This feature is now seems to be on by default.

* Adding `disable_search` because we do not need for the codecov action
  to search for coverage files: we explicitly provide files.

Signed-off-by: Mikalai Radchuk <mradchuk@redhat.com>

.github/workflows/go.yaml

@@ -33,8 +33,8 @@ jobs:
       run: go test -v ./... -coverprofile cover.out
     - uses: codecov/codecov-action@v4
       with:
+        disable_search: true
         files: cover.out
-        functionalities: fixes
         token: ${{ secrets.CODECOV_TOKEN }}
 
   go-apidiff: