chore(deps): bump mdformat-gfm from 0.3.7 to 0.4.1 in /tools/sgmdformat

Bumps [mdformat-gfm](https://github.com/hukkin/mdformat-gfm) from 0.3.7 to 0.4.1.
- [Changelog](https://github.com/hukkin/mdformat-gfm/blob/master/CHANGELOG.md)
- [Commits](hukkin/mdformat-gfm@0.3.7...0.4.1)

---
updated-dependencies:
- dependency-name: mdformat-gfm
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

tools/sgmdformat/requirements.txt

@@ -1,4 +1,4 @@
 mdformat==0.7.19
-mdformat-gfm==0.3.7
+mdformat-gfm==0.4.1
 mdformat-admon==2.0.6
 mdformat-frontmatter==2.0.8