raise gmavenplus-plugin from 1.6 to 1.13.1

[in-fke]

for better compatibility with Azure DevOps Artifacts Feeds (older plugin version references unresolved properties in transitive dependencies which Azure DevOps cannot handle)

Failed to transfer file: <your-devops-url>/maven/v1/org/sonatype/sisu/inject/guice-parent/2.9.1/guice-parent-2.9.1.pom. Return code is: 400 , ReasonPhrase:Bad Request - System.InvalidOperationException: There is an error in XML document (0, 0). ---> System.FormatException: The string '${guice.with.jarjar}' is not a valid Boolean value.    
at System.Xml.XmlConvert.ToBoolean(String s)    
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderMavenPomMetadata.Read4_MavenPomDependency(Boolean isNullable, Boolean checkType)    
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializatio...