Bump mysql2 from 3.2.4 to 3.5.2

Bumps [mysql2](https://github.com/sidorares/node-mysql2) from 3.2.4 to 3.5.2.
- [Release notes](https://github.com/sidorares/node-mysql2/releases)
- [Changelog](https://github.com/sidorares/node-mysql2/blob/master/Changelog.md)
- [Commits](sidorares/node-mysql2@v3.2.4...v3.5.2)

---
updated-dependencies:
- dependency-name: mysql2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -18,7 +18,7 @@
   },
   "dependencies": {
     "@iobroker/adapter-core": "2.6.8",
-    "mysql2": "3.2.4"
+    "mysql2": "3.5.2"
   },
   "devDependencies": {
     "@iobroker/adapter-dev": "1.2.0",