chore: set next snapshot

Author: fugerit79

pom.xml

@@ -9,7 +9,7 @@
     <relativePath></relativePath>
   </parent>
   <artifactId>junit5-tag-check-maven-plugin</artifactId>
-  <version>1.2.0</version>
+  <version>1.2.1-SNAPSHOT</version>
   <packaging>maven-plugin</packaging>
   <name>junit5-tag-check-maven-plugin</name>
   <description>A simple plugin to check the presence of JUnit5 test by tags.</description>