Bump pm2 from 5.1.2 to 5.2.0

Bumps [pm2](https://github.com/Unitech/pm2) from 5.1.2 to 5.2.0.
- [Release notes](https://github.com/Unitech/pm2/releases)
- [Changelog](https://github.com/Unitech/pm2/blob/master/CHANGELOG.md)
- [Commits](Unitech/pm2@5.1.2...5.2.0)

---
updated-dependencies:
- dependency-name: pm2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -51,7 +51,7 @@
   "dependencies": {
     "@jessety/pm2-logrotate": "^2.7.1",
     "node-windows": "1.0.0-beta.6",
-    "pm2": "5.1.2"
+    "pm2": "5.2.0"
   },
   "devDependencies": {
     "@jessety/eslint-config": "^1.0.8",