prepare for next development iteration

pom.xml

@@ -3,7 +3,7 @@
 
     <groupId>de.stklcode.jvault</groupId>
     <artifactId>jvault-connector</artifactId>
-    <version>1.5.2</version>
+    <version>1.5.3-SNAPSHOT</version>
 
     <packaging>jar</packaging>
 
@@ -42,7 +42,6 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.build.outputTimestamp>2025-07-16T16:17:58Z</project.build.outputTimestamp>
         <argLine />
     </properties>