build: lock sequelize at 6.6.2

[Zxilly]

fix: #56 @hsluoyz plz review Signed-off-by: Zxilly zhouxinyu1001@gmail.com

[coveralls]

Pull Request Test Coverage Report for Build 1039496622

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 86.111%

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Totals
Change from base Build 1039369606:	0.0%
Covered Lines:	99
Relevant Lines:	107

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💛 - Coveralls

[hsluoyz]

@Zxilly use "fix:" because we need to make a release

[Zxilly]

@hsluoyz we already have some unreleased commit in the git history. This won't affect.

[github-actions[bot]]

:tada: This PR is included in version 2.3.0 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: