Change version on the main branch to HEAD-SNAPSHOT.

Relase branches will get the actual version numbers

Author: nymanjens

pom.xml

@@ -22,7 +22,7 @@
 
   <groupId>com.google.testparameterinjector</groupId>
   <artifactId>test-parameter-injector</artifactId>
-  <version>1.0-SNAPSHOT</version>
+  <version>HEAD-SNAPSHOT</version>
 
   <name>TestParameterInjector</name>