chore(deps): update codecov/codecov-action action to v6

Author: renovate[bot]

.github/workflows/build-main.yml

@@ -51,7 +51,7 @@ jobs:
           retention-days: 14
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
 
   publish-snapshot:
     needs: build