ci(deps): bump codecov/codecov-action from 4 to 5

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/main_ci.yml

@@ -46,7 +46,7 @@ jobs:
         pdm run coverage xml
 
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         file: ./coverage.xml
         flags: unittests