This fixes a slight regex bug on Bash 5, where `[:/]` would only match
`:` but not both `:/`.
```bash
$ git remote -v | grep "github.com[:/]coder/coder.*(fetch)" | cut -f1
$ git remote -v | grep "github.com[:/]*coder/coder.*(fetch)" | cut -f1
origin
```
The former will actually cause the whole script to bork because of
`pipefail`, since `grep` exits 1.
Signed-off-by: Danny Kopping <dannykopping@gmail.com>
