fix(deps): update dependency conventional-changelog to v6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
conventional-changelog (source)	^5.0.0 -> ^6.0.0

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Release Notes

conventional-changelog/conventional-changelog (conventional-changelog)

v6.0.0

Compare Source

⚠ BREAKING CHANGES

• Node >= 18 is required
• Now all packages, except gulp-conventional-changelog, are ESM-only.

Features

• drop node 16 support (#​1226) (ec69cfd)
• move from CommonJS to ESM (#​1144) (c5b859d)

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