Update of CONTRIBUTING.md to reflect 3.0 changelog
CONTRIBUTING.md updated to require NodeJS v12.x rather than v10.x, as Pulumi 3.0 no longer supports the latter.
@@ -9,7 +9,7 @@ For larger features, we'd appreciate it if you open a [new issue](https://github
To hack on Pulumi, you'll need to get a development environment set up. You'll want to install the following on your machine:
- Go 1.16
-- NodeJS 10.X.X or later
+- NodeJS 12.X.X or later
- Python 3.6 or later
- [.NET Core](https://dotnet.microsoft.com/download)
- [pipenv](https://github.com/pypa/pipenv)
