[MAINT]: Update runtime to Node 20

[gr2m]

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Describe the need

node20 is now supported as runner (run.using in action.yml), as per https://github.com/actions/runner/releases/tag/v2.308.0

SDK Version

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API Version

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Relevant log output

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Code of Conduct

• [x] I agree to follow this project's Code of Conduct

[github-actions[bot]]

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[layonez]

@gr2m Is it planned to have a release with that version? I believe the latest release v2.2.25 is still using node16

[gr2m]

blocked currently by https://github.com/octokit/graphql-action/pull/255