chore(deploy): enable unstable Vercel deployments

.gitignore

@@ -22,3 +22,4 @@ TEST_LOG.mdtest_logs/nip-hits.txt
 
 # Local site archive for manual nsite upload (npm run archive)
 bitvid-site.zip
+.env*

vercel.json

@@ -4,7 +4,7 @@
   "installCommand": "npm install",
   "git": {
     "deploymentEnabled": {
-      "unstable": false
+      "unstable": true
     }
   },
   "headers": [