fix(type): fix bluebird type

[D-Sketon]

Promise in document.ts is incorrectly labeled as native Promise

[coveralls]

Pull Request Test Coverage Report for Build 8879192041

Details

• 78 of 79 (98.73%) changed or added relevant lines in 5 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.001%) to 98.275%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/schema.ts	7	8	87.5%

Totals
Change from base Build 8733681669:	0.001%
Covered Lines:	4386
Relevant Lines:	4463

---

💛 - Coveralls

[D-Sketon]

Test failed.

Not found in manifest. Falling back to download directly from Node
Error: Unable to find Node version '14' for platform darwin and architecture arm64.

[yoshinorin]

Test failed.

IMHO, it's okay to merge because it's caused by CI env. Probably same issues occur in other repositories, so I think it's okay to start to drop Node.js 14 and 16.