Bump nh3 from 0.2.21 to 0.3.4 (#3240)

Bumps [nh3](https://github.com/messense/nh3) from 0.2.21 to 0.3.4.
- [Release notes](https://github.com/messense/nh3/releases)
- [Commits](messense/nh3@v0.2.21...v0.3.4)

---
updated-dependencies:
- dependency-name: nh3
  dependency-version: 0.3.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Pipfile

@@ -21,7 +21,7 @@ sentry-sdk = "==2.57.0"
 channels = { extras = ["daphne"], version = "==4.2.2" }
 channels-redis = "==4.3.0"
 more-itertools = "==10.7.0"
-nh3 = "==0.2.21"
+nh3 = "==0.3.4"
 django-admin-multiple-choice-list-filter = "==0.1.1"
 django-npm = "==1.0.1"
 pymemcache = "==4.0.0"