build: fix version

Author: typed-sigterm

package.json

@@ -2,7 +2,7 @@
   "publisher": "typed-sigterm",
   "name": "oi-runner-2",
   "displayName": "OI Runner++",
-  "version": "1.2.1",
+  "version": "1.3.0",
   "private": true,
   "packageManager": "pnpm@9.15.0",
   "description": "VS Code extension designed for OIer and ACMer, for running single-file programs.",