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

[github-actions]

This pull request changes the compat entry for the Roots package from 0.8 to 0.8, 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]

Codecov Report

Merging #75 into master will increase coverage by 2.71%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #75      +/-   ##
==========================================
+ Coverage   48.85%   51.56%   +2.71%     
==========================================
  Files           6        6              
  Lines         219      223       +4     
==========================================
+ Hits          107      115       +8     
+ Misses        112      108       -4     

Impacted Files	Coverage Δ
src/LinearFitting.jl	34.78% <0.00%> (+4.34%)	⬆️
src/FiniteStrains.jl	100.00% <0.00%> (+75.00%)	⬆️

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