chore(deps): update dependency @types/snowpack-env to v2.3.4

Author: renovate-bot

snowpack-lit/package-lock.json

@@ -21,7 +21,7 @@
     "@snowpack/plugin-typescript": "1.2.1",
     "@snowpack/web-test-runner-plugin": "0.2.2",
     "@types/mocha": "8.2.2",
-    "@types/snowpack-env": "2.3.3",
+    "@types/snowpack-env": "2.3.4",
     "@web/test-runner": "0.13.13",
     "prettier": "2.3.2",
     "snowpack": "3.7.1",