Lintian tag information: bash-completion-with-hashbang (type: warning)

Description (from lintian-explain-tags)

This file starts with the #! sequence that marks interpreted scripts, but
it is a bash completion script that is merely intended to be sourced.

Please remove the line with hashbang, including any designated
interpreter.

Please refer to
https://salsa.debian.org/lintian/lintian/-/merge_requests/292#note_139494
for details.

Visibility: warning
Show-Always: no
Check: shell/bash/completion

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