pin node 25 to 25.6 (#4600)

pending: nodejs/node#61971

Author: yaacovCR

.github/workflows/ci.yml

@@ -145,7 +145,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node_version_to_setup: [20, 22, 24, 25]
+        node_version_to_setup: [20, 22, 24, 25.6]
     permissions:
       contents: read # for actions/checkout
     steps: