chore(deps): update dependency @commitlint/config-conventional --> v15

This MR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@commitlint/config-conventional (source)	^12.1.1 -> ^15.0.0

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Release Notes

conventional-changelog/commitlint

v15.0.0

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Note: Version bump only for package @​commitlint/config-conventional

v14.1.0

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Note: Version bump only for package @​commitlint/config-conventional

v14.0.0

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Note: Version bump only for package @​commitlint/config-conventional

v13.2.0

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Note: Version bump only for package @​commitlint/config-conventional

v13.1.0

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Bug Fixes

• cz-commitlint: fix minor formatting issues (99d8881)

v13.0.0

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Features

• add subject-exclamation-mark rule to improve error messages (#​2593) (be701bd)

• chore!: remove node 10 support (#​2596) (4db4ba1), closes #​2596

BREAKING CHANGES

• minimum node version is 12

12.1.3 (2021-05-12)

Note: Version bump only for package @​commitlint/config-conventional

12.1.2 (2021-04-29)

Note: Version bump only for package @​commitlint/config-conventional

12.1.1 (2021-04-02)

Note: Version bump only for package @​commitlint/config-conventional

v12.1.4

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fix node v10 support

v12.1.3

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Note: Version bump only for package @​commitlint/config-conventional

v12.1.2

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Note: Version bump only for package @​commitlint/config-conventional

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