chore(deps): update dependency gts to v3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
gts	devDependencies	major	^2.0.2 -> ^3.0.0

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Release Notes

google/gts

v3.0.1

Compare Source

v3.0.0

Compare Source

⚠ BREAKING CHANGES

• change default check to lint (#​570)
• deps: require TypeScript 4.x (#​565)

Features

• Add TypeScript v4 support (#​551) (0883956)
• change default check to lint (#​570) (c527b66)
• generate .eslintignore when running init (#​521) (8bce036)

Bug Fixes

• add build/.eslintrc.json to files field (#​553) (3b516ad)
• deps: require TypeScript 4.x (#​565) (cbc5267)
• deps: update dependency update-notifier to v5 (#​574) (9a882bf)
• deps: update typescript-eslint monorepo to v2.34.0 (#​509) (998a4ac)
• deps: update typescript-eslint monorepo to v3 (major) (#​528) (e22e173)
• deps: update typescript-eslint monorepo to v4 (#​556) (54148df)
• better error message for broken tsconfig.json (#​501) (0c17a76)
• prohibit calls for it.only and describe.only (#​499) (071c33c)

2.0.2 (2020-05-11)

Bug Fixes

• Revert 'update dependency eslint to v7'" (#​507) (0f9950b)
• deps: pin release of eslint-typescript (#​508) (bd86b42)
• deps: update dependency eslint to v7 (#​504) (6aee159)

2.0.1 (2020-05-07)

Bug Fixes

• throw an error if running with an unsupported version of nodejs (#​493) (94fdf1e)
• deps: update dependency meow to v7 (#​502) (cf91cda)

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