Ruby: Taint flow to second block param in map

When `map` is called on a hash, the values in the hash are passed to the
second parameter of the block.

Author: hmac

ruby/ql/lib/codeql/ruby/frameworks/core/Array.qll

@@ -1855,7 +1855,7 @@ module Enumerable {
 
     override predicate propagatesFlow(string input, string output, boolean preservesValue) {
       input = "Argument[self].Element[any]" and
-      output = "Argument[block].Parameter[0]" and
+      output = "Argument[block].Parameter[0, 1]" and
       preservesValue = true
       or
       input = "Argument[block].ReturnValue" and