Bump nodemon from 1.19.4 to 2.0.0 (#29699)

Bumps [nodemon](https://github.com/remy/nodemon) from 1.19.4 to 2.0.0.
- [Release notes](https://github.com/remy/nodemon/releases)
- [Commits](https://github.com/remy/nodemon/compare/v1.19.4...v2.0.0)

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

package.json

@@ -117,7 +117,7 @@
     "karma-rollup-preprocessor": "^7.0.2",
     "linkinator": "^1.7.5",
     "node-sass": "^4.13.0",
-    "nodemon": "^1.19.4",
+    "nodemon": "^2.0.0",
     "npm-run-all": "^4.1.5",
     "popper.js": "^1.16.0",
     "postcss-cli": "^6.1.3",