fix(deps): update module github.com/go-sql-driver/mysql to v1.7.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/go-sql-driver/mysql	require	minor	v1.6.0 -> v1.7.0

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Release Notes

go-sql-driver/mysql

v1.7.0: Version 1.7

Compare Source

Changes:

• Drop support of Go 1.12 (#​1211)
• Refactoring (*textRows).readRow in a more clear way (#​1230)
• util: Reduce boundary check in escape functions. (#​1316)
• enhancement for mysqlConn handleAuthResult (#​1250)

New Features:

• support Is comparison on MySQLError (#​1210)
• return unsigned in database type name when necessary (#​1238)
• Add API to express like a --ssl-mode=PREFERRED MySQL client (#​1370)
• Add SQLState to MySQLError (#​1321)

Bugfixes:

• Fix parsing 0 year. (#​1257)

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[codecov-commenter]

Codecov Report

Base: 77.98% // Head: 77.98% // No change to project coverage 👍

Coverage data is based on head (487da4e) compared to base (f919e76).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #264   +/-   ##
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  Coverage   77.98%   77.98%           
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  Files          30       30           
  Lines         995      995           
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  Hits          776      776           
  Misses        168      168           
  Partials       51       51           

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