build: fix GN configuration for deps/base64
https://github.com/nodejs/node/pull/50629 was merged right after we merged GN files.
/cc @lpinca
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
https://github.com/nodejs/node/pull/50629 was merged right after we merged GN files.
/cc @lpinca