Eliminate gutenberg-packages-update workflow in favor of native Dependabot grouping #7576
Description
Feature Description
Dependabot has native beta support for dependency grouping: dependabot/dependabot-core#1190 (comment). We should use that instead of our gutenberg-packages-update workflow.
Potentially include other dependencies grouped.
Acceptance Criteria
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Implementation Brief
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QA Testing Instructions
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Demo
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Changelog Entry
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