Grab latest binary from https://go.dev/dl/

Optional: Backup previous install:

```sh
# Backup previous install
mv $HOME/.go $HOME/Downloads/golang.bak
# Install from `.tar.gz`:
tar xf $HOME/Downloads/go*.tar.gz --directory $HOME;mv $HOME/go $HOME/.go
```

Verify your `go` version with:

```sh
which go
go version
```