chore(deps-dev): bump nodemon from 1.19.4 to 2.0.6 in /api-server

Bumps [nodemon](https://github.com/remy/nodemon) from 1.19.4 to 2.0.6.
- [Release notes](https://github.com/remy/nodemon/releases)
- [Commits](https://github.com/remy/nodemon/compare/v1.19.4...v2.0.6)

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

api-server/package.json

@@ -82,7 +82,7 @@
     "joi": "^13.7.0",
     "joi-objectid": "^2.0.0",
     "loopback-component-explorer": "^6.4.0",
-    "nodemon": "^1.19.4",
+    "nodemon": "^2.0.6",
     "passport-mock-strategy": "^2.0.0",
     "pm2": "^4.5.0",
     "smee-client": "^1.2.2",