Upgrade shiro

Author: Gary Keim

pom.xml

@@ -22,7 +22,7 @@
 
         <guava.version>31.1-jre</guava.version>
         <groovy.version>3.0.10</groovy.version>
-        <shiro.version>1.8.0</shiro.version>
+        <shiro.version>1.9.0</shiro.version>
         <csrfguard.version>4.1.3</csrfguard.version>
 
         <slf4j.version>1.7.36</slf4j.version>