Bump h2 from 4.2.0 to 4.3.0

Bumps [h2](https://github.com/python-hyper/h2) from 4.2.0 to 4.3.0.
- [Changelog](https://github.com/python-hyper/h2/blob/master/CHANGELOG.rst)
- [Commits](python-hyper/h2@v4.2.0...v4.3.0)

---
updated-dependencies:
- dependency-name: h2
  dependency-version: 4.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/requirements.txt

@@ -64,7 +64,7 @@ h11==0.16.0
     #   hypercorn
     #   uvicorn
     #   wsproto
-h2==4.2.0
+h2==4.3.0
     # via hypercorn
 hpack==4.1.0
     # via h2