Make it possible to set keycloak version via -P

roles/keycloak/files/providers/keycloak-mailpass-rest/build.gradle.kts

@@ -35,10 +35,12 @@ repositories {
     }
 }
 
+val keycloakVer: String? by project
+
 dependencies {
     val bouncyCastleVersion = "1.68"
     val restassuredVersion = "4.3.3"
-    val keycloakVersion = "12.0.4"
+    val keycloakVersion = if (keycloakVer != null) keycloakVer else "12.0.4"
     val javaxVersion = "2.0.1.Final"
     val junitVersion = "4.13.2"
     val hamcrestVersion = "2.2"
@@ -110,4 +112,4 @@ tasks.register("checkFormat") {
 tasks.register("checkStyle") {
     dependsOn("checkstyleMain")
     dependsOn("checkstyleTest")
-}
\ No newline at end of file
+}