ci: fix upload of codecov data (#2116)

From latest release upload artifact will ignore hidden files by
default, configure to don't ignore them when uploading converage data.

Author: xrmx

.github/workflows/run-matrix.yml

@@ -38,3 +38,4 @@ jobs:
         with:
           name: coverage-reports
           path: "**/.coverage*"
+          include-hidden-files: true