fix: update dependency overrides for security vulnerabilities

Add pnpm overrides for 7 audit findings (3 high, 4 moderate):

- undici >=7.24.0 (via wrangler>miniflare): WebSocket 64-bit length overflow crash, unbounded memory in permessage-deflate decompression, unhandled exception from invalid server_max_window_bits, HTTP request/response smuggling, CRLF injection via upgrade option, unbounded memory in DeduplicationHandler response buffering
- brace-expansion >=5.0.5 (via eslint>minimatch): zero-step sequence causes process hang and memory exhaustion

Author: hhvrc

package.json

@@ -98,7 +98,10 @@
 		},
 		"overrides": {
 			"cookie@<0.7.0": ">=0.7.0",
-			"js-yaml@<4.1.1": ">=4.1.1"
+			"js-yaml@<4.1.1": ">=4.1.1",
+			"undici@>=7.0.0 <7.24.0": ">=7.24.0",
+			"undici@>=7.17.0 <7.24.0": ">=7.24.0",
+			"brace-expansion@<5.0.5": ">=5.0.5"
 		}
 	}
 }