Update python-keycloak requirement from ^3.2.0 to ^4.5.0

Updates the requirements on [python-keycloak](https://github.com/marcospereirampj/python-keycloak) to permit the latest version.
- [Changelog](https://github.com/marcospereirampj/python-keycloak/blob/master/CHANGELOG.md)
- [Commits](marcospereirampj/python-keycloak@v3.2.0...v4.5.0)

---
updated-dependencies:
- dependency-name: python-keycloak
  dependency-type: direct:production
...

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

pyproject.toml

@@ -35,7 +35,7 @@ httpx = "^0.27.0"
 
 # Optional dependencies for behaviours.
 jasmin-ldap-django = {git = "https://github.com/cedadev/jasmin-ldap-django.git", rev = "2b708c9136f31e8819ffff00fcb95567c27ed659", optional=true}
-python-keycloak = {version = "^3.2.0", optional = true}
+python-keycloak = {version = "^4.5.0", optional = true}
 drf-nested-routers = {version = "^0.94.1", optional = true}
 
 [tool.poetry.extras]