ci(deps): bump codecov/codecov-action from 3 to 7

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3 to 7.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v3...v7)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -76,7 +76,7 @@ jobs:
           pytest tests/ -v -m "not slow" --cov=dnallm --cov-report=xml --cov-report=term-missing --tb=short
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v7
         with:
           file: ./coverage.xml
           fail_ci_if_error: false