Update package version

Author: Caitlin Bales (MSFT)

gradle.properties

@@ -22,7 +22,7 @@ mavenRepoUrl         = https://api.bintray.com/maven/microsoftgraph/Maven/msgrap
 mavenGroupId         = com.microsoft.graph
 mavenArtifactId      = msgraph-sdk-android
 mavenMajorVersion    = 1
-mavenMinorVersion    = 5
+mavenMinorVersion    = 6
 mavenPatchVersion    = 0
 nightliesUrl         = http://dl.bintray.com/MicrosoftGraph/Maven