KNOX-3211: Upgrade mina-core from maintenance release to latest 2.2.4 (#1103)

diff --git a/pom.xml b/pom.xml
index cd06bd8..ef66768 100644
--- a/pom.xml
+++ b/pom.xml
@@ -253,7 +253,7 @@
         <maven-enforcer-plugin.version>3.0.0-M3</maven-enforcer-plugin.version>
         <maven-pmd-plugin.version>3.12.0</maven-pmd-plugin.version>
         <metrics.version>4.1.16</metrics.version>
-        <mina.version>2.0.27</mina.version>
+        <mina.version>2.2.4</mina.version>
         <netty.version>4.1.127.Final</netty.version>
         <nimbus-jose-jwt.version>10.0.2</nimbus-jose-jwt.version>
         <nodejs.version>v16.10.0</nodejs.version>