Bump rsa from 4.0 to 4.7

Bumps [rsa](https://github.com/sybrenstuvel/python-rsa) from 4.0 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-4.0...version-4.7)

---
updated-dependencies:
- dependency-name: rsa
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements.txt

@@ -24,7 +24,7 @@ pyasn1-modules==0.2.7
 pytz==2019.3
 qrcode==6.1
 requests==2.22.0
-rsa==4.0
+rsa==4.7
 six==1.13.0
 uritemplate==3.0.0
 urllib3==1.22.0