Bump @electron-forge/maker-zip from 6.0.0-beta.67 to 6.0.0-beta.68

Bumps [@electron-forge/maker-zip](https://github.com/electron-userland/electron-forge) from 6.0.0-beta.67 to 6.0.0-beta.68.
- [Release notes](https://github.com/electron-userland/electron-forge/releases)
- [Changelog](https://github.com/electron-userland/electron-forge/blob/main/CHANGELOG.md)
- [Commits](https://github.com/electron-userland/electron-forge/compare/v6.0.0-beta.67...v6.0.0-beta.68)

---
updated-dependencies:
- dependency-name: "@electron-forge/maker-zip"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -30,7 +30,7 @@
   "devDependencies": {
     "@electron-forge/cli": "^6.0.0-beta.67",
     "@electron-forge/maker-squirrel": "^6.0.0-beta.68",
-    "@electron-forge/maker-zip": "^6.0.0-beta.67",
+    "@electron-forge/maker-zip": "^6.0.0-beta.68",
     "electron": "^21.2.0"
   },
   "dependencies": {