upgrade to node24 and update all npm dependencies to latest

- action.yml: node20 -> node24
- All @actions/* packages upgraded to latest major versions (ESM-only):
  - @actions/core ^1.10.0 -> ^3.0.0
  - @actions/github ^5.1.1 -> ^9.0.0
  - @actions/io ^1.1.2 -> ^3.0.2
  - @actions/tool-cache ^2.0.1 -> ^4.0.0
  - @actions/exec ^1.1.0 -> ^3.0.0
- @vercel/ncc ^0.36.1 -> ^0.38.4 (wrapper: 0.34.0 -> ^0.38.4)
- husky ^8.0.3 -> ^9.1.7 (postinstall -> prepare, updated hook format)
- jest ^29.3.1 -> ^30.3.0
- semistandard ^16.0.1 -> ^17.0.0
- Convert all source files from CommonJS to ESM (required by new @actions/* packages)
- Add "type": "module" to both package.json files
- Replace __dirname with import.meta.dirname in index.js
- Rebuild dist bundles (now output as ESM via ncc)

https://claude.ai/code/session_01Y8NseCm28GqE8nQ1Yvg5aa

Author: claude

.husky/pre-commit

@@ -1,4 +1 @@
-#!/bin/sh
-. "$(dirname "$0")/_/husky.sh"
-
 npm run build && git add dist/ && git add wrapper/

action.yml

@@ -8,7 +8,7 @@ inputs:
     required: false
 
 runs:
-  using: 'node20'
+  using: 'node24'
   main: 'dist/index.js'
 
 branding: