Add EE license to the TruffleRuby EE standalone.

Author: ansalond

mx.truffleruby/mx_truffleruby.py

@@ -249,6 +249,7 @@ def verify_ci(args):
         'LLVM Runtime Enterprise': ('lib/sulong', []),
         'LLVM Runtime Native Enterprise': ('lib/sulong', []),
         'TruffleRuby license files EE': ('', []),
+        'GraalVM enterprise license files': ('', ['LICENSE.txt', 'GRAALVM-README.md']),
     }},
     truffle_jars=[
         # Distributions