chore(deps): update dependency org.honton.chas:exists-maven-plugin to v0.15.0

Author: renovate[bot]

pom.xml

@@ -242,7 +242,7 @@
             <plugin>
                 <groupId>org.honton.chas</groupId>
                 <artifactId>exists-maven-plugin</artifactId>
-                <version>0.14.0</version>
+                <version>0.15.0</version>
                 <executions>
                     <execution>
                         <goals>