Make CompatHelper run on v1

[ChrisRackauckas]

No description provided.

[DilumAluthge]

I'd recommend you use the default Julia that ships on GHA runners. You can copy-paste the recommended config from here: https://github.com/JuliaRegistries/CompatHelper.jl/blob/master/.github/workflows/CompatHelper.yml

[codecov-commenter]

Codecov Report

Merging #119 (5be3dba) into master (56322bb) will increase coverage by 0.19%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #119      +/-   ##
==========================================
+ Coverage   28.72%   28.91%   +0.19%     
==========================================
  Files          11       11              
  Lines         369      370       +1     
==========================================
+ Hits          106      107       +1     
  Misses        263      263              

Impacted Files	Coverage Δ
src/misc.jl	41.17% <0.00%> (+3.67%)	⬆️

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