[wp-trac] [WordPress Trac] #43032: Update `license` field in `package.json` to a valid SPDX license

[WordPress Trac]

#43032: Update `license` field in `package.json` to a valid SPDX license
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 Reporter:  netweb            |      Owner:
     Type:  defect (bug)      |     Status:  new
 Priority:  normal            |  Milestone:  5.0
Component:  Build/Test Tools  |    Version:
 Severity:  normal            |   Keywords:
  Focuses:                    |
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 The current `GPL-2.0+` SPDX license string has been deprecated
 [https://spdx.org/news/news/2018/01/license-list-30-released SPDX v3.0]

 The updated SPDX license string is now `GPL-2.0-or-later`

 Previously: [32880]

 See also: https://spdx.org/licenses/ SPDX

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Ticket URL: <https://core.trac.wordpress.org/ticket/43032>
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