[wp-trac] [WordPress Trac] #27343: Update phpunit grunt task to not use deprecated util

[WordPress Trac]

#27343: Update phpunit grunt task to not use deprecated util
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 Reporter:  jorbin            |       Owner:
     Type:  defect (bug)      |      Status:  new
 Priority:  normal            |   Milestone:  4.0
Component:  Build/Test Tools  |     Version:
 Severity:  normal            |  Resolution:
 Keywords:  has-patch         |     Focuses:
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Comment (by jorbin):

 That error was do to grunt-legacy-util being passed to loadNpmTask despite
 not actually containing any tasks.  New patch fixes that.

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Ticket URL: <https://core.trac.wordpress.org/ticket/27343#comment:7>
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