Make scripts/gh/show-bump.sh run in nix

[Anviking]

• Make scripts/gh/show-bump.sh run in nix-shell, such that you don't need to worry about installing dependencies manually.

Issue Number

None / Release.

Comments

[Anviking]

Not sure why it fails with

In ./scripts/gh/show-bump.sh line 1:
--
  | #! /usr/bin/env nix-shell
  | ^-- SC1008: This shebang was unrecognized. ShellCheck only supports sh/bash/dash/ksh. Add a 'shell' directive to specify.

while nix-shell is fine in make_release.sh

[rvl]

If not using a standard shell script interpreter like #!/bin/sh, then shellcheck needs to be told which kind of shell with a directive. I fixed it.

[rvl]

Thanks