Bump vsce from 1.67.1 to 1.68.0 (#2248)

Bumps [vsce](https://github.com/Microsoft/vsce) from 1.67.1 to 1.68.0.
- [Release notes](https://github.com/Microsoft/vsce/releases)
- [Commits](microsoft/vscode-vsce@v1.67.1...v1.68.0)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -58,7 +58,7 @@
     "rewire": "~4.0.1",
     "tslint": "~5.20.0",
     "typescript": "~3.5.3",
-    "vsce": "~1.67.1",
+    "vsce": "~1.68.0",
     "vscode": "~1.1.36"
   },
   "extensionDependencies": [