update snapshot version

Author: joshiste

pom.xml

@@ -26,7 +26,7 @@
  <description>Spring Boot Admin</description>
  <url>https://github.com/codecentric/spring-boot-admin/</url>
  <properties>
- <revision>2.0.3-SNAPSHOT</revision>
+ <revision>2.0.4-SNAPSHOT</revision>
  <spring-boot.version>2.0.6.RELEASE</spring-boot.version>
  <spring-cloud.version>Finchley.SR1</spring-cloud.version>
  <hazelcast-tests.version>3.9.4</hazelcast-tests.version>