New comment by Goorzhel on void-packages repository

https://github.com/void-linux/void-packages/pull/37950#issuecomment-1191093966

Comment:
Another oversight:
```
❯ flyctl version      
Update available 0.0.351 -> v0.0.356.
Run "flyctl version update" to upgrade.
flyctl v0.0.351 linux/amd64 Commit: df8c42a BuildDate: 2022-07-10T01:45:12Z
```
That command curls a script to `sh`, the script's job being to install flyctl to `~/.fly/bin/flyctl`.

The warning can be suppressed with `export FLY_NO_UPDATE_CHECK=1`, but I wouldn't know where to set that on package installation (if it's feasible).