Bump testcontainers-keycloak from 1.5.0 to 1.6.0 (#1263)

Bumps [testcontainers-keycloak](https://github.com/dasniko/testcontainers-keycloak) from 1.5.0 to 1.6.0.
- [Release notes](https://github.com/dasniko/testcontainers-keycloak/releases)
- [Commits](dasniko/testcontainers-keycloak@1.5.0...1.6.0)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

pom.xml

@@ -206,7 +206,7 @@
 
         <!-- Test containers version, should be aligned with version used in Quarkus -->
         <test-containers.version>1.15.2</test-containers.version>
-        <keycloak.testcontainers.version>1.5.0</keycloak.testcontainers.version>
+        <keycloak.testcontainers.version>1.6.0</keycloak.testcontainers.version>
     </properties>
 
     <dependencyManagement>