NIFI-8682: Upgrade opencsv from 4.5 to 5.4 to mitigate CVE_2014_0114

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

This closes #5144.
diff --git a/nifi-toolkit/nifi-toolkit-cli/pom.xml b/nifi-toolkit/nifi-toolkit-cli/pom.xml
index a508879..26706e1 100644
--- a/nifi-toolkit/nifi-toolkit-cli/pom.xml
+++ b/nifi-toolkit/nifi-toolkit-cli/pom.xml
@@ -120,7 +120,7 @@
         <dependency>
             <groupId>com.opencsv</groupId>
             <artifactId>opencsv</artifactId>
-            <version>4.5</version>
+            <version>5.4</version>
         </dependency>
     </dependencies>
 </project>