build(deps): bump rsa from 4.1 to 4.7

Bumps [rsa](https://github.com/sybrenstuvel/python-rsa) from 4.1 to 4.7.
- [Release notes](https://github.com/sybrenstuvel/python-rsa/releases)
- [Changelog](https://github.com/sybrenstuvel/python-rsa/blob/main/CHANGELOG.md)
- [Commits](sybrenstuvel/python-rsa@version-4.1...version-4.7)

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

requirements.txt

@@ -62,7 +62,7 @@ pytz==2018.9
 PyYAML==5.3.1
 redis==3.3.8
 requests==2.21.0
-rsa==4.1
+rsa==4.7
 sentry-sdk==0.7.14
 sh==1.12.14
 six==1.12.0