Bump electron-updater from 6.1.8 to 6.2.1

Bumps [electron-updater](https://github.com/electron-userland/electron-builder/tree/HEAD/packages/electron-updater) from 6.1.8 to 6.2.1.
- [Release notes](https://github.com/electron-userland/electron-builder/releases)
- [Changelog](https://github.com/electron-userland/electron-builder/blob/master/packages/electron-updater/CHANGELOG.md)
- [Commits](https://github.com/electron-userland/electron-builder/commits/[email protected]/packages/electron-updater)

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

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

package.json

@@ -6,7 +6,7 @@
   "dependencies": {
     "adm-zip": "^0.5.12",
     "auto-launch": "^5.0.6",
-    "electron-updater": "^6.1.8",
+    "electron-updater": "^6.2.1",
     "node-html-parser": "^6.1.13",
     "sanitize-filename": "^1.6.3",
     "shell-env": "^4.0.1",