chore(deps): update commitlint monorepo to v7.6.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
@​commitlint/cli	devDependencies	minor	7.5.2 -> 7.6.0	source
@​commitlint/config-conventional	devDependencies	minor	7.5.0 -> 7.6.0	source
@​commitlint/travis-cli	devDependencies	minor	7.5.2 -> 7.6.0	source

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Release Notes

conventional-changelog/commitlint

### [`v7.6.0`](https://togithub.com/conventional-changelog/commitlint/compare/v7.5.2...v7.6.0) [Compare Source](https://togithub.com/conventional-changelog/commitlint/compare/v7.5.2...v7.6.0)

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