Merge pull request #355 from grails/renovate/grails-monorepo

Update grails monorepo to v5.0.0.RC1

Author: puneetbehl

gradle.properties

@@ -14,7 +14,7 @@ jaxbVersion=2.3.1
 junitJupiterVersion=5.7.2
 picocliVersion=4.6.1
 projectVersion=7.1.1-SNAPSHOT
-pluginGrailsVersion=5.0.0.M1
+pluginGrailsVersion=5.0.0.RC1
 seleniumSafariDriverVersion=3.14.0
 seleniumVersion=3.14.0
 servletApiVersion=4.0.1