Git lfs – “this exceeds GitHub’s file size limit of 100.00 MB”

Since Git LFS 2.2.0 you can use git lfs migrate command. In your case it would look this way:

git lfs migrate import --include="*.csv"

After this, you should be able to push changes into origin.

More information about git lfs migrate is available on Git LFS 2.2.0 release note site and git-lfs-migrate command documentation.