Bump django-waffle from 4.1.0 to 4.2.0 in /requirements (#22866)

Bumps [django-waffle](https://github.com/django-waffle/django-waffle) from 4.1.0 to 4.2.0.
- [Release notes](https://github.com/django-waffle/django-waffle/releases)
- [Changelog](https://github.com/jazzband/django-waffle/blob/master/CHANGES)
- [Commits](jazzband/django-waffle@v4.1.0...v4.2.0)

---
updated-dependencies:
- dependency-name: django-waffle
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements/prod.txt

@@ -596,9 +596,9 @@ django-statsd-mozilla==0.4.0 \
 django-tables2==2.7.0 \
     --hash=sha256:4113fcc575eb438a12e83a4d4ea01452e4800d970e8bdd0e4122ac171af1900d \
     --hash=sha256:99e06d966ca8ac69fd74092eb45c79a280dd5ca0ccb81395d96261f62128e1af
-django-waffle==4.1.0 \
-    --hash=sha256:5979a2f3dd674ef7086480525b39651fc2045427f6d8e6a614192656d3402c5b \
-    --hash=sha256:e49d7d461d89f3bd8e53f20efe39310acca8f275c9888495e68e195345bf18b1
+django-waffle==4.2.0 \
+    --hash=sha256:774f45b929627c9d303620c85419ce1da54066f2082d741af014f5bbd747e372 \
+    --hash=sha256:97709550f4e75ce2a20b13e29f39777e1439a968569f2ee89398ca368afd586c
 # djangorestframework is required by drf-nested-routers
 djangorestframework==3.15.2 \
     --hash=sha256:2b8871b062ba1aefc2de01f773875441a961fefbf79f5eed1e32b2f096944b20 \