fix(deps): update dependency @octokit/webhooks-definitions to v3.50.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@octokit/webhooks-definitions	3.49.0 -> 3.50.0

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Release Notes

octokit/webhooks

### [`v3.50.0`](https://togithub.com/octokit/webhooks/releases/v3.50.0) [Compare Source](https://togithub.com/octokit/webhooks/compare/v3.49.0...v3.50.0) ##### Features - augment schemas with information fom the REST API schema ([#​317](https://togithub.com/octokit/webhooks/issues/317)) ([3874a28](https://togithub.com/octokit/webhooks/commit/3874a2878da2d18bd4b0804764c6e507ad426f42))

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