Updating Mina to 2.1.6
diff --git a/pom.xml b/pom.xml
index f667733..4e69bf2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -75,7 +75,7 @@
     <ldapsdk.version>4.1</ldapsdk.version>
     <logback.version>1.2.11</logback.version>
     <maven.version>3.8.6</maven.version>
-    <mina.core.version>2.1.5</mina.core.version>
+    <mina.core.version>2.1.6</mina.core.version>
     <org.apache.felix.version>7.0.5</org.apache.felix.version>
     <pax-exam.version>4.13.4</pax-exam.version>
     <pax-url.version>2.6.11</pax-url.version>