Bump redis from 4.1.1 to 4.1.2 in /requirements (#18710)

Bumps [redis](https://github.com/redis/redis-py) from 4.1.1 to 4.1.2.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](https://github.com/redis/redis-py/compare/v4.1.1...v4.1.2)

---
updated-dependencies:
- dependency-name: redis
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

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

requirements/prod.txt

@@ -331,9 +331,9 @@ pytz==2021.3 \
 sentry_sdk==1.5.4 \
     --hash=sha256:4fc7960a82c95d906a0514cf4d9aacba1743eb9863a5b7c2a01c525a7d9b21e6 \
     --hash=sha256:f7e54567937ebcbe938c4df1075ec891587faeb7c74184b88cf2894e47c86116
-redis==4.1.1 \
-    --hash=sha256:bc97d18938ca18d66737d0ef88584a2073069589e4026813cfba9ad6df9a9f40 \
-    --hash=sha256:07420a3fbedd8e012c31d4fadac943fb81568946da202c5a5bc237774e5280a0
+redis==4.1.2 \
+    --hash=sha256:bf86397be532fc0a888d5976a5313a3a70d8f912d52bc0c09bffda4b8425a1d4 \
+    --hash=sha256:f13eea4254e302485add677cadedaf1305c1b3a4e07535e23b7b239798ce9301
 # requests is required by PyBrowserID, amo-validator, django-mozilla-product-details, docker-compose, docker-py, nobot, pytest-base-url, pyupio, safety
 requests==2.27.1 \
     --hash=sha256:f22fa1e554c9ddfd16e6e41ac79759e17be9e492b3587efa038054674760e72d \