Remove unused dependencies (#29855)

Remove some unused JS dependencies and add knip.

GitOrigin-RevId: 70d9f4c9216d14ec53d19935f465a470c84d7b83

.knip.json

@@ -0,0 +1,5 @@
+{
+  "$schema": "https://unpkg.com/knip@5/schema.json",
+  "entry": ["src/*/index.ts", "src/**/*.test.*", "scripts/*.{mjs,js,cjs}"],
+  "project": ["src/**/*.{js,cjs,mjs,jsx,ts,cts,mts,tsx}", "scripts/**/*.js"]
+}

package.json

@@ -207,7 +207,6 @@
     "@types/adm-zip": "^0.5.5",
     "@types/deep-equal": "1.0.1",
     "@types/detect-port": "~1.3.5",
-    "@types/http-proxy": "~1.17.9",
     "@types/inquirer": "^8.2.0",
     "@types/jwt-encode": "~1.0.0",
     "@types/node": "^18.17.0",
@@ -224,9 +223,7 @@
     "depcheck": "~1.4.7",
     "detect-port": "^1.5.1",
     "dotenv": "^16.0.3",
-    "dprint": "0.46.1",
     "encoding": "^0.1.13",
-    "envfile": "6.18.0",
     "esbuild": "0.23.0",
     "esbuild-plugin-external-global": "~1.0.1",
     "eslint": "9",
@@ -238,11 +235,11 @@
     "fetch-retry": "~5.0.6",
     "find-up": "^6.3.0",
     "happy-dom": "~14.12.3",
-    "http-proxy": "~1.18.1",
     "inquirer": "^9.1.4",
     "inquirer-search-list": "~1.2.6",
     "jsdom": "~24.1.0",
     "jwt-encode": "~1.0.1",
+    "knip": "~5.30.2",
     "open": "^8.3.0",
     "openid-client": "^5.3.1",
     "ora": "^6.1.0",