Fix location for SSRF with Kong Unirest (#8407)

Author: smola

dd-java-agent/instrumentation/iast-instrumenter/src/main/resources/datadog/trace/instrumentation/iastinstrumenter/iast_exclusion.trie

@@ -172,6 +172,7 @@
 1 jva_cup.*
 1 liquibase.*
 1 kodo.*
+2 kong.unirest.*
 1 macromedia.*
 1 Microsoft.*
 1 nanoxml.*