Bump moto from 2.2.7 to 2.2.8

Bumps [moto](https://github.com/spulec/moto) from 2.2.7 to 2.2.8.
- [Release notes](https://github.com/spulec/moto/releases)
- [Changelog](https://github.com/spulec/moto/blob/master/CHANGELOG.md)
- [Commits](getmoto/moto@2.2.7...2.2.8)

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

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

Author: dependabot[bot]

requirements.txt

@@ -9,7 +9,7 @@ django-cors-headers==3.8.0
 pyyaml==5.4.1
 colour_runner==0.1.1
 boto3==1.18.42
-moto==2.2.7
+moto==2.2.8
 python-dateutil==2.8.2
 requests==2.26.0
 factory_boy==3.2.0