Update Code of Conduct project maintainer email address (#157)
Update Code of Conduct project maintainer email address (#157)

Motivation:

The code-of-conduct email address is out-of-date.

Modifications:

Update code-of-conduct email address to swift-server-conduct@group.apple.com

Result:

- Code of conduct email address is up-to-date.
apple/swift-nio-ssl,apple/swift-nio-ssl,apple/swift-nio-ssl,apple/swift-nio-ssl,apple/swift-nio-ssl,apple/swift-nio-ssl