Why dont you just use the telegram nodes?
Here is a working demo : Taking a picture and sending it via telegram - #4 by Steve-Mcl
This does work. Did you wait long enough for the modules to download and install? Does your node-red server have internet access?
Proof it works...
Lastly, why are you trying to import got
? The http-request node uses got - you can simply use the http nodes to visually create your flow instead of trying to write everything in a function.