Bump @vscode/gulp-electron to 1.41.3 (retry transient network errors) (#315558)

* build: bump @vscode/gulp-electron to 1.41.3

Brings in microsoft/vscode-gulp-electron#42 which adds retry-with-backoff
around transient network errors when downloading Electron, fixing build
breaks like getaddrinfo ENOTFOUND release-assets.githubusercontent.com.

NOTE: package-lock.json will be regenerated once 1.41.3 is published.
Do not merge until then.

* Sync package-lock.json with package.json after updating @vscode/gulp-electron to 1.41.3.