Bump keycloak-core from 7.0.1 to 21.1.2

Bumps [keycloak-core](https://github.com/keycloak/keycloak) from 7.0.1 to 21.1.2.
- [Release notes](https://github.com/keycloak/keycloak/releases)
- [Commits](keycloak/keycloak@7.0.1...21.1.2)

---
updated-dependencies:
- dependency-name: org.keycloak:keycloak-core
  dependency-type: direct:production
...

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

pom.xml

@@ -68,7 +68,7 @@
     <resteasyVersion>3.0.12.Final</resteasyVersion>
     <undertowVersion>2.2.24.Final</undertowVersion>
     <xnioVersion>3.8.2.Final</xnioVersion>
-    <keycloakVersion>7.0.1</keycloakVersion>
+    <keycloakVersion>21.1.2</keycloakVersion>
     <bouncycastleVersion>1.67</bouncycastleVersion>
     <bytemanVersion>4.0.13</bytemanVersion>
     <kafkaVersion>3.1.1</kafkaVersion>