fix(mongodb): update SocketOptions default value (#45547)
fix(mongodb): update SocketOptions default value (#45547)

I found SocketOptions.autoReconnect in [v3.1](http://mongodb.github.io/node-mongodb-native/3.1/api/Server.html) default value should be true, so I fixed it and updated SocketOptions to [v3.6](http://mongodb.github.io/node-mongodb-native/3.6/api/Server.html).
georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,dsebastien/DefinitelyTyped,georgemarshall/DefinitelyTyped,dsebastien/DefinitelyTyped,mcliment/DefinitelyTyped,markogresak/DefinitelyTyped