[lldb-vscode] Make it possible to run vsce package
Running vsce package to package lldb-vscode as an installable .vsix file errors with:
ERROR Invalid publisher name 'llvm.org'. Expected the identifier of a publisher, not its human-friendly name.
This patch fixes the publisher name and bumps a required dependency so that vsce package succeeds.
Reviewed By: clayborg
Differential Revision: https://reviews.llvm.org/D80569