chore: release v0.6.8

Author: mscolnick

package.json

@@ -5,7 +5,7 @@
   "publisher": "marimo-team",
   "description": "Run marimo in VSCode",
   "packageManager": "[email protected]",
-  "version": "0.6.7",
+  "version": "0.6.8",
   "engines": {
     "vscode": "^1.77.0"
   },