chore(deps): update dependency gts to v3 (#332)
chore(deps): update dependency gts to v3 (#332)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [gts](https://togithub.com/google/gts) | devDependencies | major | [`^2.0.0-alpha.4` -> `^3.0.0`](https://renovatebot.com/diffs/npm/gts/2.0.2/3.0.0) |

---

### Release Notes

<details>
<summary>google/gts</summary>

### [`v3.0.0`](https://togithub.com/google/gts/blob/master/CHANGELOG.md#&#8203;300-httpswwwgithubcomgooglegtscomparev202v300-2020-10-08)

[Compare Source](https://togithub.com/google/gts/compare/v2.0.2...v3.0.0)

##### ⚠ BREAKING CHANGES

-   change default `check` to `lint` ([#&#8203;570](https://togithub.com/google/gts/issues/570))
-   **deps:** require TypeScript 4.x ([#&#8203;565](https://togithub.com/google/gts/issues/565))

##### Features

-   Add TypeScript v4 support ([#&#8203;551](https://www.github.com/google/gts/issues/551)) ([0883956](https://www.github.com/google/gts/commit/08839565a1d2b4b39d532c9b0b596f01b18856fe))
-   change default `check` to `lint` ([#&#8203;570](https://www.github.com/google/gts/issues/570)) ([c527b66](https://www.github.com/google/gts/commit/c527b66be1ef6a78ea14b3d29225a8d7fb7097bd))
-   generate .eslintignore when running init ([#&#8203;521](https://www.github.com/google/gts/issues/521)) ([8bce036](https://www.github.com/google/gts/commit/8bce0368767f0c2ad7d0700deb839962bc928d16))

##### Bug Fixes

-   add build/.eslintrc.json to files field ([#&#8203;553](https://www.github.com/google/gts/issues/553)) ([3b516ad](https://www.github.com/google/gts/commit/3b516ad5e9f0d58201dde469461db7c6ed1c1b78))
-   **deps:** require TypeScript 4.x ([#&#8203;565](https://www.github.com/google/gts/issues/565)) ([cbc5267](https://www.github.com/google/gts/commit/cbc5267579ef24e8c8ceaa2ef794df3ef54ea56a))
-   **deps:** update dependency update-notifier to v5 ([#&#8203;574](https://www.github.com/google/gts/issues/574)) ([9a882bf](https://www.github.com/google/gts/commit/9a882bf4ac30ad06e7b91a65ad5721d8e8b41c4b))
-   **deps:** update typescript-eslint monorepo to v2.34.0 ([#&#8203;509](https://www.github.com/google/gts/issues/509)) ([998a4ac](https://www.github.com/google/gts/commit/998a4ac9b75c97f04d8e5db37563f32d31652f23))
-   **deps:** update typescript-eslint monorepo to v3 (major) ([#&#8203;528](https://www.github.com/google/gts/issues/528)) ([e22e173](https://www.github.com/google/gts/commit/e22e17338db2ddb7eb829c821037c2f4e77ff869))
-   **deps:** update typescript-eslint monorepo to v4 ([#&#8203;556](https://www.github.com/google/gts/issues/556)) ([54148df](https://www.github.com/google/gts/commit/54148dfbd8b5f8b36a0f44f901c5db933393a661))
-   better error message for broken tsconfig.json ([#&#8203;501](https://www.github.com/google/gts/issues/501)) ([0c17a76](https://www.github.com/google/gts/commit/0c17a76c6650eee1d8abaff11a897a432eeaa65f))
-   prohibit calls for it.only and describe.only ([#&#8203;499](https://www.github.com/google/gts/issues/499)) ([071c33c](https://www.github.com/google/gts/commit/071c33ceef0e3765166aaebf6ed4698167ac0f98))

##### [2.0.2](https://www.github.com/google/gts/compare/v2.0.1...v2.0.2) (2020-05-11)

##### Bug Fixes

-   Revert 'update dependency eslint to v7'" ([#&#8203;507](https://www.github.com/google/gts/issues/507)) ([0f9950b](https://www.github.com/google/gts/commit/0f9950b273329dbcce5f3cc20864c3dcd076f08c))
-   **deps:** pin release of eslint-typescript ([#&#8203;508](https://www.github.com/google/gts/issues/508)) ([bd86b42](https://www.github.com/google/gts/commit/bd86b42e2bb904d3765dee82262e4691a11b9958))
-   **deps:** update dependency eslint to v7 ([#&#8203;504](https://www.github.com/google/gts/issues/504)) ([6aee159](https://www.github.com/google/gts/commit/6aee1595d0486ae2c7fd68d16b1b59c4c4015753))

##### [2.0.1](https://www.github.com/google/gts/compare/v2.0.0...v2.0.1) (2020-05-07)

##### Bug Fixes

-   throw an error if running with an unsupported version of nodejs ([#&#8203;493](https://www.github.com/google/gts/issues/493)) ([94fdf1e](https://www.github.com/google/gts/commit/94fdf1eaed634aa73c3e44c7a3d9f1325f773b07))
-   **deps:** update dependency meow to v7 ([#&#8203;502](https://www.github.com/google/gts/issues/502)) ([cf91cda](https://www.github.com/google/gts/commit/cf91cda1afab25759427511d3c97d0037d61c649))

</details>

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