Bash autocompletion warning: command substitution: ignored null byte in input

### Affected Version
paru v2.1.0 - libalpm v16.0.1

### Description
Tried to find issue or discussion, can't find.
When I type `paru -S <some_package_name> and press TAB to complete it I get warning which mess up terminal.

### Output
```bash
❯ paru -S gol-bash: warning: command substitution: ignored null byte in input
angci-lint
```