Staged Release 5.6.0 (firebase#110)

* [maven-release-plugin] prepare release v5.6.0

* [maven-release-plugin] prepare for next development iteration

Author: hiranya911

pom.xml

@@ -19,7 +19,7 @@
 
     <groupId>com.google.firebase</groupId>
     <artifactId>firebase-admin</artifactId>
-    <version>5.5.1-SNAPSHOT</version>
+    <version>5.6.1-SNAPSHOT</version>
     <packaging>jar</packaging>
 
     <name>firebase-admin</name>