lint: don't forget to lint .bash files

Summary:

This is a backport of core#23506

Note: I also excluded some animation files from json linters to make arc lint --everything usable.

Test Plan:
Add a shellcheck violation in a bash file and run arc lint

arc lint --everything

Reviewers: #bitcoin_abc, Fabien

Reviewed By: #bitcoin_abc, Fabien

Subscribers: Fabien

Differential Revision: https://reviews.bitcoinabc.org/D13954