ci: add node 26 to the test matrix (#2635)

Author: zimeg

.github/workflows/ci-build.yml

@@ -23,6 +23,7 @@ jobs:
           - "20.x"
           - "22.x"
           - "24.x"
+          - "26.x"
     runs-on: ${{ matrix.os }}
     permissions:
       contents: read