[wp-trac] [WordPress Trac] #64900: Improve `browserslist:update` Grunt task

[WordPress Trac]

#64900: Improve `browserslist:update` Grunt task
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 Reporter:  desrosj                   |       Owner:  (none)
     Type:  defect (bug)              |      Status:  new
 Priority:  normal                    |   Milestone:  7.0.1
Component:  Build/Test Tools          |     Version:
 Severity:  normal                    |  Resolution:
 Keywords:  good-first-bug has-patch  |     Focuses:
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Comment (by vedantere):

 Test Report
 Env:
 OS: macOS (Apple Silicon)
 Node: v22.16.0
 npm: 10.9.2
 WordPress: trunk

 Results:
 Gruntfile updated correctly ✅
 npx grunt browserslist:update runs without deprecation warning ✅
 caniuse-lite updated successfully ✅
 Works as expected ✅

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Ticket URL: <https://core.trac.wordpress.org/ticket/64900#comment:4>
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