NIFI-8707 Upgraded SSHJ to 0.31.0

Signed-off-by: Pierre Villard <pierre.villard.fr@gmail.com>

This closes #5162.
diff --git a/nifi-nar-bundles/nifi-standard-bundle/pom.xml b/nifi-nar-bundles/nifi-standard-bundle/pom.xml
index d309d0c..5671646 100644
--- a/nifi-nar-bundles/nifi-standard-bundle/pom.xml
+++ b/nifi-nar-bundles/nifi-standard-bundle/pom.xml
@@ -188,7 +188,7 @@
             <dependency>
                 <groupId>com.hierynomus</groupId>
                 <artifactId>sshj</artifactId>
-                <version>0.30.0</version>
+                <version>0.31.0</version>
             </dependency>
             <dependency>
                 <groupId>org.apache.httpcomponents</groupId>