Bump boto3 from 1.18.42 to 1.21.22

Bumps [boto3](https://github.com/boto/boto3) from 1.18.42 to 1.21.22.
- [Release notes](https://github.com/boto/boto3/releases)
- [Changelog](https://github.com/boto/boto3/blob/develop/CHANGELOG.rst)
- [Commits](boto/boto3@1.18.42...1.21.22)

---
updated-dependencies:
- dependency-name: boto3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements-base.txt

@@ -1,8 +1,8 @@
 Django==3.2.7
 Wand==0.6.7
-boto3==1.18.42
+boto3==1.21.22
 bleach==4.0.0
-boto3==1.18.42
+boto3==1.21.22
 celery==5.1.2
 kombu==5.1.0
 django-extensions==3.1.3