Update dependency @t3-oss/env-nextjs to ^0.6.0

Author: renovate[bot]

package.json

@@ -9,7 +9,7 @@
     "start": "next start"
   },
   "dependencies": {
-    "@t3-oss/env-nextjs": "^0.3.1",
+    "@t3-oss/env-nextjs": "^0.6.0",
     "@total-typescript/ts-reset": "^0.5.1",
     "class-variance-authority": "^0.7.0",
     "clsx": "^2.0.0",