ci: add Node 26 to test matrix

Author: ricellis

.github/workflows/test.yml

@@ -16,7 +16,7 @@ jobs:
   test:
     strategy:
       matrix:
-        node: ['22', '24', '25']
+        node: ['22', '24', '26']
     runs-on: ubuntu-latest
     services:
       couchdb: