STORM-3861 update clojure-maven-plugin (#3477)

diff --git a/pom.xml b/pom.xml
index 26a8368..494e109 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1316,7 +1316,7 @@
                 <plugin>
                     <groupId>com.theoryinpractise</groupId>
                     <artifactId>clojure-maven-plugin</artifactId>
-                    <version>1.7.1</version>
+                    <version>1.8.4</version>
                     <extensions>true</extensions>
                 </plugin>
                 <plugin>