Update dependency @pulumi/github to v5.21.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@pulumi/github (source)	5.20.0 -> 5.21.0

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Release Notes

pulumi/pulumi-github (@​pulumi/github)

### [`v5.21.0`](https://togithub.com/pulumi/pulumi-github/releases/tag/v5.21.0) [Compare Source](https://togithub.com/pulumi/pulumi-github/compare/v5.20.0...v5.21.0) #### Changelog - [`b6dc4fa`](https://togithub.com/pulumi/pulumi-github/commit/b6dc4fa) Update GitHub Actions workflows. ([#​461](https://togithub.com/pulumi/pulumi-github/issues/461)) - [`0a194bb`](https://togithub.com/pulumi/pulumi-github/commit/0a194bb) Update GitHub Actions workflows. ([#​464](https://togithub.com/pulumi/pulumi-github/issues/464)) - [`9a568ac`](https://togithub.com/pulumi/pulumi-github/commit/9a568ac) Update GitHub Actions workflows. ([#​465](https://togithub.com/pulumi/pulumi-github/issues/465)) - [`8f6ced1`](https://togithub.com/pulumi/pulumi-github/commit/8f6ced1) Update GitHub Actions workflows. ([#​466](https://togithub.com/pulumi/pulumi-github/issues/466)) - [`43fe1d0`](https://togithub.com/pulumi/pulumi-github/commit/43fe1d0) Update GitHub Actions workflows. ([#​467](https://togithub.com/pulumi/pulumi-github/issues/467)) - [`6c7090d`](https://togithub.com/pulumi/pulumi-github/commit/6c7090d) Update GitHub Actions workflows. ([#​469](https://togithub.com/pulumi/pulumi-github/issues/469)) - [`66d5c5c`](https://togithub.com/pulumi/pulumi-github/commit/66d5c5c) Upgrade pulumi-terraform-bridge to v3.61.0 ([#​462](https://togithub.com/pulumi/pulumi-github/issues/462)) - [`c554449`](https://togithub.com/pulumi/pulumi-github/commit/c554449) Upgrade terraform-provider-github to v5.40.0 ([#​471](https://togithub.com/pulumi/pulumi-github/issues/471)) - [`ce491ac`](https://togithub.com/pulumi/pulumi-github/commit/ce491ac) make build_sdks - [`1ee6313`](https://togithub.com/pulumi/pulumi-github/commit/1ee6313) make tfgen

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Configuration

📅 Schedule: Branch creation - "every weekend" in timezone Europe/Brussels, Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• [ ] If you want to rebase/retry this PR, check this box

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