Update dependency ruby to v4

Author: renovate[bot]

.github/workflows/publish.yml

@@ -30,7 +30,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.4.7'
+          ruby-version: '4.0.2'
       - uses: oven-sh/setup-bun@v2
         with:
           bun-version-file: ".tool-versions"

.tool-versions

@@ -1,3 +1,3 @@
 nodejs 24.13.0
-ruby 3.4.7
+ruby 4.0.2
 bun 1.3.11