CompatHelper: bump compat for "DataFrames" to "1.0"

[github-actions]

This pull request changes the compat entry for the DataFrames package from 0.21, 0.22 to 0.21, 0.22, 1.0.

This keeps the compat entries for earlier versions.

Note: I have not tested your package with this new compat entry. It is your responsibility to make sure that your package tests pass before you merge this pull request.

[codecov]

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  Hits              ?     1085           
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