Bump pycryptodomex from 3.20.0 to 3.21.0

Bumps [pycryptodomex](https://github.com/Legrandin/pycryptodome) from 3.20.0 to 3.21.0.
- [Release notes](https://github.com/Legrandin/pycryptodome/releases)
- [Changelog](https://github.com/Legrandin/pycryptodome/blob/master/Changelog.rst)
- [Commits](Legrandin/pycryptodome@v3.20.0...v3.21.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -1,6 +1,6 @@
 defusedxml==0.7.1
 protobuf==3.20.1
-pycryptodomex==3.20.0
+pycryptodomex==3.21.0
 pyogg==0.6.14a.1
 requests==2.32.3
 websocket-client==1.8.0