Update node support to v26, remove node v20, update NAN to 2.27.0 (#4322)

platform/node/scripts/publish.sh

@@ -9,7 +9,7 @@ if [[ "${CIRCLE_TAG}" == "node-v${PACKAGE_JSON_VERSION}" ]] || [[ "${PUBLISH:-}"
     # Changes to the version targets here should happen in tandem with updates to the
     # EXCLUDE_NODE_ABIS property in cmake/node.cmake and the "node" engines property in
     # package.json.
-    for TARGET in 20.0.0 22.0.0 24.0.0; do
+    for TARGET in 22.0.0 24.0.0 26.0.0; do
         rm -rf build/stage
 
         if [[ "${BUILDTYPE}" == "RelWithDebInfo" ]]; then