Update OpenMRS version to 2.8.4-SNAPSHOT

Author: dkayiwa

pom.xml

@@ -21,7 +21,7 @@
 		<liquibase.plugin.version>4.23.2</liquibase.plugin.version>
 
 		<tomcat.version>9.0.106</tomcat.version>
-		<openmrs.version>2.8.1-SNAPSHOT</openmrs.version>
+		<openmrs.version>2.8.4-SNAPSHOT</openmrs.version>
 		<refapp.version>3.6.0-SNAPSHOT</refapp.version>
 		<mariadb4jVersion>3.2.0</mariadb4jVersion>
 		<junitVersion>5.12.2</junitVersion>