chore(deps): update dependency @sourcegraph/eslint-config to ^0.30.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@sourcegraph/eslint-config	^0.29.0 -> ^0.30.0

Test plan: CI should pass with updated dependencies. No review required: this is an automated dependency update PR.

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Release Notes

sourcegraph/eslint-config

### [`v0.30.0`](https://togithub.com/sourcegraph/eslint-config/releases/tag/v0.30.0) [Compare Source](https://togithub.com/sourcegraph/eslint-config/compare/v0.29.0...v0.30.0) ##### Features - Upgrade to v^5.20.0 [@​typescript-eslint/eslint-plugin](https://togithub.com/typescript-eslint/eslint-plugin) ([dc1cd97](https://togithub.com/sourcegraph/eslint-config/commit/dc1cd976fc133311a937e1ec015de3ef42071e78))

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Configuration

📅 Schedule: "" in timezone America/Los_Angeles.

🚦 Automerge: Enabled.

♻ 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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