chore: remove unused @scure/base dependency

Author: rz1989s

package.json

@@ -24,7 +24,6 @@
   },
   "dependencies": {
     "@hono/node-server": "^1.19.9",
-    "@scure/base": "^2.0.0",
     "@solana-program/memo": "^0.11.0",
     "@solana-program/system": "^0.12.0",
     "@solana-program/token": "^0.11.0",