⬆️ deps: Update dependency @actions/github to v9

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@actions/github (source)	^7.0.0 → ^9.0.0

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Release Notes

actions/toolkit (@​actions/github)

v9.0.0

• Breaking change: Package is now ESM-only
  • CommonJS consumers must use dynamic import() instead of require()
  • Example: const { getOctokit, context } = await import('@​actions/github')
• Fix TypeScript compilation by migrating to ESM, enabling proper imports from @octokit/core/types

v8.0.1

• Update undici to 6.23.0
• Update @actions/http-client to 3.0.2

v8.0.0

• Update @​octokit dependencies
  • @octokit/core ^7.0.6
  • @octokit/plugin-paginate-rest ^14.0.0
  • @octokit/plugin-rest-endpoint-methods ^17.0.0
  • @octokit/request ^10.0.7
  • @octokit/request-error ^7.1.0
• Breaking change: Minimum Node.js version is now 20 (previously 18)

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