CompatHelper: bump compat for OMEinsum to 0.7, (keep existing compat)

[github-actions[bot]]

This pull request changes the compat entry for the OMEinsum package from 0.6 to 0.6, 0.7. 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[bot]]

Codecov Report

Merging #42 (b4206b2) into master (7e9f9c2) will decrease coverage by 0.83%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #42      +/-   ##
==========================================
- Coverage   41.09%   40.25%   -0.84%     
==========================================
  Files           6        6              
  Lines          73       77       +4     
==========================================
+ Hits           30       31       +1     
- Misses         43       46       +3     

Impacted Files	Coverage Δ
src/batched.jl	0.00% <0.00%> (ø)
src/subnets.jl	100.00% <0.00%> (ø)

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