Bump codemirror from 5.65.20 to 6.0.2

Bumps [codemirror](https://github.com/codemirror/basic-setup) from 5.65.20 to 6.0.2.
- [Changelog](https://github.com/codemirror/basic-setup/blob/main/CHANGELOG.md)
- [Commits](https://github.com/codemirror/basic-setup/commits/6.0.2)

---
updated-dependencies:
- dependency-name: codemirror
  dependency-version: 6.0.2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package-lock.json

@@ -76,7 +76,7 @@
 	"dependencies": {
 		"backbone": "1.6.0",
 		"clipboard": "2.0.11",
-		"codemirror": "5.65.20",
+		"codemirror": "6.0.2",
 		"core-js-url-browser": "3.6.4",
 		"csslint": "1.0.5",
 		"element-closest": "3.0.2",