bump pitest gradle plugin version

Author: FeliTam

build.gradle

@@ -5,7 +5,7 @@ plugins {
     id 'org.springframework.boot' version '3.5.4'
     id 'com.github.ben-manes.versions' version '0.52.0'
     id 'com.gorylenko.gradle-git-properties' version '2.5.2'
-    id 'info.solidsoft.pitest' version '1.15.0'
+    id 'info.solidsoft.pitest' version '1.19.0-rc.1'
     id 'au.com.dius.pact' version '4.6.17'
     id 'net.serenity-bdd.serenity-gradle-plugin' version '4.2.34'
     id 'org.sonarqube' version '6.2.0.5505'