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

[github-actions]

This pull request changes the compat entry for the SpecialFunctions package from 0.10 to 0.10, 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.

Closes #15, closes #16

[ranocha]

I can't really check this since FastTransforms.jl seems to limit SpecialFunctions.jl. Hence, I need to wait before I can really check compatibility automatically.

[codecov]

Codecov Report

Merging #14 (b6bd399) into master (b9e3a6f) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #14   +/-   ##
=======================================
  Coverage   92.41%   92.41%           
=======================================
  Files           3        3           
  Lines         145      145           
=======================================
  Hits          134      134           
  Misses         11       11           

Flag	Coverage Δ
unittests	92.41% <ø> (ø)

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