update jruby

Nuzair46 · Nuzair46 · commit 599fe1d01348 · 2026-01-29T01:13:52.000+09:00
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
@@ -25,7 +25,7 @@ jobs:
           - 3.3
           - 3.4
           - 4.0
-          - jruby-9
+          - jruby-10
           - truffleruby
     steps:
       - name: Checkout
diff --git a/.tool-versions b/.tool-versions
@@ -0,0 +1 @@
+ruby 4.0.1
