Bump pycryptodome from 3.20.0 to 3.21.0

Bumps [pycryptodome](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: pycryptodome
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

setup.py

@@ -66,7 +66,7 @@ def get_version():
         "GitPython==3.1.43",
         "jsonschema==4.23.0",
         "jinja2==3.1.4",
-        "pycryptodome==3.20.0",
+        "pycryptodome==3.21.0",
         "pydantic==2.8.2",
         "pyfiglet==1.0.2",
         "python-keycloak==3.12.0",