chore(deps): update devdependency standard-version to v9

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
standard-version	devDependencies	major	^8.0.2 -> ^9.0.0

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Release Notes

conventional-changelog/standard-version

### [`v9.0.0`](https://togithub.com/conventional-changelog/standard-version/blob/master/CHANGELOG.md#​900-httpswwwgithubcomconventional-changelogstandard-versioncomparev802v900-2020-08-15) [Compare Source](https://togithub.com/conventional-changelog/standard-version/compare/v8.0.2...v9.0.0) ##### ⚠ BREAKING CHANGES - NodeJS@8 is no longer supported. ([#​612](https://togithub.com/conventional-changelog/standard-version/issues/612)) ##### Bug Fixes - **deps:** update dependency conventional-changelog to v3.1.23 ([#​652](https://www.github.com/conventional-changelog/standard-version/issues/652)) ([00dd3c0](https://www.github.com/conventional-changelog/standard-version/commit/00dd3c01aab20d28a8bbd1e174e416d6c2b34d90)) - **deps:** update dependency conventional-changelog-conventionalcommits to v4.4.0 ([#​650](https://www.github.com/conventional-changelog/standard-version/issues/650)) ([9f201a6](https://www.github.com/conventional-changelog/standard-version/commit/9f201a61bb50ec12053a04faccfaea20e44d6ff2)) - **deps:** update dependency conventional-recommended-bump to v6.0.10 ([#​653](https://www.github.com/conventional-changelog/standard-version/issues/653)) ([c360d6a](https://www.github.com/conventional-changelog/standard-version/commit/c360d6a307909c6e571b29d4a329fd786b4d4543)) ##### Build System - NodeJS@8 is no longer supported. ([#​612](https://www.github.com/conventional-changelog/standard-version/issues/612)) ([05edef2](https://www.github.com/conventional-changelog/standard-version/commit/05edef2de79d8d4939a6e699ce0979ff8da12de9)) ##### [8.0.2](https://www.github.com/conventional-changelog/standard-version/compare/v8.0.1...v8.0.2) (2020-07-14) ##### Bug Fixes - Commit message and tag name is no longer enclosed in quotes. ([#​619](https://www.github.com/conventional-changelog/standard-version/issues/619)) ([ae032bf](https://www.github.com/conventional-changelog/standard-version/commit/ae032bfa9268a0a14351b0d78b6deedee7891e3a)), closes [#​621](https://www.github.com/conventional-changelog/standard-version/issues/621) [#​620](https://www.github.com/conventional-changelog/standard-version/issues/620) ##### [8.0.1](https://www.github.com/conventional-changelog/standard-version/compare/v8.0.0...v8.0.1) (2020-07-12) ##### Bug Fixes - **deps:** update dependency conventional-changelog to v3.1.21 ([#​586](https://www.github.com/conventional-changelog/standard-version/issues/586)) ([fd456c9](https://www.github.com/conventional-changelog/standard-version/commit/fd456c995f3f88497fbb912fb8aabb8a42d97dbb)) - **deps:** update dependency conventional-changelog-conventionalcommits to v4.3.0 ([#​587](https://www.github.com/conventional-changelog/standard-version/issues/587)) ([b3b5eed](https://www.github.com/conventional-changelog/standard-version/commit/b3b5eedea3eaf062d74d1004a55a0a6b1e3ca6c6)) - **deps:** update dependency conventional-recommended-bump to v6.0.9 ([#​588](https://www.github.com/conventional-changelog/standard-version/issues/588)) ([d4d2ac2](https://www.github.com/conventional-changelog/standard-version/commit/d4d2ac2a99c095227118da795e1c9e19d06c9a0a)) - **deps:** update dependency git-semver-tags to v4 ([#​589](https://www.github.com/conventional-changelog/standard-version/issues/589)) ([a0f0e81](https://www.github.com/conventional-changelog/standard-version/commit/a0f0e813b2be4a2065600a19075fda4d6f331ef8)) - Vulnerability Report GHSL-2020-11101 ([9d978ac](https://www.github.com/conventional-changelog/standard-version/commit/9d978ac9d4f64be4c7b9d514712ab3757732d561))

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