Bump mysql from 2.17.1 to 2.18.1

[dependabot[bot]]

Bumps mysql from 2.17.1 to 2.18.1.

Changelog

Sourced from mysql's changelog.

v2.18.1 (2020-01-23)

• Fix Amazon RDS profile for yaSSL MySQL servers with 2019 CA #2292

v2.18.0 (2020-01-21)

• Add localInfile option to control LOAD DATA LOCAL INFILE
• Add new Amazon RDS Root 2019 CA to Amazon RDS SSL profile #2280
• Add new error codes up to MySQL 5.7.29
• Fix early detection of bad callback to connection.query
• Support Node.js 12.x #2211
• Support Node.js 13.x
• Support non-enumerable properties in object argument to connection.query #2253
• Update bignumber.js to 9.0.0
• Update readable-stream to 2.3.7

Commits

• 32a0293 2.18.1
• 431c5e5 Fix Amazon RDS profile for yaSSL MySQL servers with 2019 CA
• f410f91 2.18.0
• dbb07ed Support non-enumerable properties in object argument to connection.query
• ca84d0a Fix early detection of bad callback to connection.query
• 1428049 Add new Amazon RDS Root 2019 CA to Amazon RDS SSL profile
• ec382a2 docs: document PoolCluster disconnect behavior
• d247eef build: update lts tag in travis
• 337e87a Add localInfile option to control LOAD DATA LOCAL INFILE
• 1e2c350 Add new error codes up to MySQL 5.7.29
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself) You can disable automated security fix PRs for this repo from the Security Alerts page.