Demo: update swing-datetime-picker to v2.1.4

Author: DJ-Raven

demo/pom.xml

@@ -35,7 +35,7 @@
         <dependency>
             <groupId>io.github.dj-raven</groupId>
             <artifactId>swing-datetime-picker</artifactId>
-            <version>2.1.4-SNAPSHOT</version>
+            <version>2.1.4</version>
         </dependency>
         <dependency>
             <groupId>io.github.dj-raven</groupId>