upgrating gem lock dependency (#2209)

Author: Tulsishah

tools/gem_dependency/Gemfile.lock

@@ -23,8 +23,8 @@ GEM
       insist
       mustache (= 0.99.8)
       stud
-    rexml (3.2.8)
-      strscan (>= 3.0.9)
+    rexml (3.3.2)
+      strscan
     strscan (3.1.0)
     stud (0.0.23)