fix(deps): update dependency mysql2 to v3.4.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
mysql2	3.4.0 -> 3.4.3

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Release Notes

sidorares/node-mysql2 (mysql2)

v3.4.3

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Bug Fixes

• remove acquireTimeout invalid option (#​2095) (eb311db)

v3.4.2

Compare Source

Bug Fixes

• changing type files to declaration type files (98e6f3a)

v3.4.1

Compare Source

Bug Fixes

• createPool uri overload (98623dd)
• PoolCluster typings (3902ca6)
• create promise-based PoolCluster typings (7f38496)
• missing parserCache in promise.js (7f35cf5)
• missing constants in promise.js (4ce2c70)
• missing keys for Types constant (86655ec)
• missing typings for Charsets constants (01f77a0)
• missing typings for CharsetToEncoding constants (609229a)
• missing typings for parserCache (891a523)
• missing typings for Types constant (04601dd)
• rename file of typings Charsets constants (51c4196)

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[coveralls]

Pull Request Test Coverage Report for Build 53f0f0e6-f239-46de-b62b-a4d81d679f45

• 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 92.864%

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Totals
Change from base Build 2fb3d08d-76e1-453d-97aa-e65875b7c83e:	0.0%
Covered Lines:	6364
Relevant Lines:	6853

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💛 - Coveralls