fix(ci): opt into Node.js 24 for GitHub Actions

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: pikespeak

.github/workflows/ci.yml

@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [main]
 
+env:
+  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
+
 jobs:
   test:
     runs-on: ubuntu-latest

.github/workflows/publish.yml

@@ -4,6 +4,9 @@ on:
   push:
     tags: ["v*"]
 
+env:
+  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
+
 jobs:
   publish:
     runs-on: ubuntu-latest