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

Author: ilanbiala

pom.xml

@@ -7,7 +7,7 @@
   <artifactId>twilio</artifactId>
   <packaging>jar</packaging>
   <name>twilio</name>
-  <version>7.14.0</version>
+  <version>7.14.1-SNAPSHOT</version>
   <description>Twilio Java Helper Library</description>
   <url>https://www.twilio.com</url>
   <licenses>
@@ -21,7 +21,7 @@
     <url>git@github.com:twilio/twilio-java.git</url>
     <connection>scm:git:git@github.com:twilio/twilio-java.git</connection>
     <developerConnection>scm:git:git@github.com:twilio/twilio-java.git</developerConnection>
-    <tag>7.14.0</tag>
+    <tag>HEAD</tag>
   </scm>
   <developers>
     <developer>