test(client): install @atproto/dev-env

Author: shuuji3

packages/client/package.json

@@ -35,6 +35,7 @@
     "@atcute/client": "^2.0.6"
   },
   "devDependencies": {
+    "@atproto/dev-env": "^0.3.93",
     "@atcute/internal-dev-env": "workspace:*",
     "@tsky/lexicons": "workspace:*",
     "@vitest/coverage-istanbul": "^3.0.6",