Update Benchmark00207.java

Manually fix CodeQL issue in autofix: “Benchmark00207.java:[80,39] error: local variables referenced from an inner class must be final or effectively final”

Author: davewichers

src/main/java/org/owasp/benchmark/testcode/Benchmark00207.java

@@ -56,6 +56,7 @@ public void doPost(HttpServletRequest request, HttpServletResponse response)
                                     org.apache.commons.codec.binary.Base64.encodeBase64(
                                             param.getBytes())));
         }
+        final String bar2 = bar;
 
         try {
             java.io.FileInputStream file =
@@ -77,7 +78,7 @@ public void doPost(HttpServletRequest request, HttpServletResponse response)
                         @Override
                         public Object resolveVariable(javax.xml.namespace.QName variableName) {
                             if ("emplid".equals(variableName.getLocalPart())) {
-                                return bar;
+                                return bar2;
                             }
                             return null;
                         }