codespell: Use specific version instead of master

[matejmatuska]

Let's not blindly use the master ref, use a specific version instead.

This should fix the failing Codespell action. It's failing because only v2 is allowed to run in this repo (as set in repository settings).

[github-actions]

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[fernflower]

lgtm

[matejmatuska]

/packit copr-build

[pirat89]

merging. this change does not have an effect on the failed tests.