Bump mobx from 6.7.0 to 6.8.0 (#7170)

Bumps [mobx](https://github.com/mobxjs/mobx) from 6.7.0 to 6.8.0.
- [Release notes](https://github.com/mobxjs/mobx/releases)
- [Commits](https://github.com/mobxjs/mobx/commits)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

packages/open-lens/package.json

@@ -200,7 +200,7 @@
     "@ogre-tools/injectable-extension-for-auto-registration": "^12.0.1",
     "@ogre-tools/injectable-extension-for-mobx": "^12.0.1",
     "@ogre-tools/injectable-react": "^12.0.1",
-    "mobx": "^6.7.0",
+    "mobx": "^6.8.0",
     "rimraf": "^4.1.2"
   },
   "devDependencies": {