Update vitest-config-silverwind to 11.3.3, add Node 26 to CI

Co-Authored-By: Claude (Opus 4.7) <noreply@anthropic.com>

Author: silverwind

.github/workflows/ci.yaml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [22, 24]
+        node: [22, 24, 26]
 
     runs-on: ubuntu-latest
     steps:

package.json

@@ -28,7 +28,7 @@
     "updates-config-silverwind": "2.1.0",
     "versions": "15.0.0",
     "vitest": "4.1.4",
-    "vitest-config-silverwind": "11.1.4"
+    "vitest-config-silverwind": "11.3.3"
   },
   "keywords": [
     "dnsbl",