Update Rush stack (non-major)

Author: renovate[bot]

package.json

@@ -32,7 +32,7 @@
   "devDependencies": {
     "@changesets/cli": "^2.27.1",
     "@livekit/changesets-changelog-github": "^0.0.4",
-    "@rushstack/heft": "^0.67.2",
+    "@rushstack/heft": "^0.68.0",
     "glob": "^11.0.0",
     "husky": "^8.0.3",
     "nodemon": "^3.0.3",