LFS files break mix install

[samrat]

Hello 👋

Thanks for this library!

When trying to install the membrane_mpeg_ts_plugin library in Livebook I get the following error:

git-lfs filter-process: git-lfs: command not found
fatal: the remote end hung up unexpectedly

** (Mix.Error) Command "git --git-dir=.git checkout --quiet origin/HEAD" failed
    (mix 1.15.7) lib/mix.ex:577: Mix.raise/2
    (mix 1.15.7) lib/mix/scm/git.ex:136: Mix.SCM.Git.checkout/2
    (elixir 1.15.7) lib/file.ex:1624: File.cd!/2
    (mix 1.15.7) lib/mix/dep/fetcher.ex:64: Mix.Dep.Fetcher.do_fetch/3
    (mix 1.15.7) lib/mix/dep/converger.ex:229: Mix.Dep.Converger.all/8
    (mix 1.15.7) lib/mix/dep/converger.ex:244: Mix.Dep.Converger.all/8
    (mix 1.15.7) lib/mix/dep/converger.ex:162: Mix.Dep.Converger.init_all/8
    #cell:setup:1: (file)

To fix this, I forked the repo and removed the LFS files in the .gitattributes. Would you be open to a PR making this change? My understanding is that the LFS files are required only to run tests.

Looks like you've had to do something similar in another project of yours: kim-company/kim_hls@7089ccd