[maven-release-plugin] rollback the release of v2.3.21

Author: thomaswoehlke

pom.xml

@@ -10,7 +10,7 @@
 
     <groupId>org.woehlke</groupId>
     <artifactId>simpleworklist</artifactId>
-    <version>2.3.22-SNAPSHOT</version>
+    <version>2.3.21-SNAPSHOT</version>
 	<packaging>jar</packaging>
 
     <name>simpleworklist</name>
@@ -184,7 +184,7 @@
     </distributionManagement>
 
     <properties>
-        <java.version>13</java.version>
+        <java.version>14</java.version>
         <version.maven>3.6.3</version.maven>
 
         <!-- SCM and Releasing with Maven -->