Update pom.xml

Changed
    <version>1.14.0-SNAPSHOT</version>
to
    <version>1.15.0-SNAPSHOT</version>

Author: thomasoss

tls/pom.xml

@@ -30,7 +30,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.14.0-SNAPSHOT</version>
+    <version>1.15.0-SNAPSHOT</version>
   </parent>
   <artifactId>tls</artifactId>
   <dependencies>