JAVA-2308: trim driver version string in Gradle build file
JAVA-2308: trim driver version string in Gradle build file

   Fixes issue where the manifest can not be loaded by older version of Java

rozza/mongo-java-driver,jyemin/mongo-java-driver,jyemin/mongo-java-driver,rozza/mongo-java-driver,jsonking/mongo-java-driver,jsonking/mongo-java-driver