CompatHelper: bump compat for "Distributions" to "0.24"

[github-actions]

This pull request changes the compat entry for the Distributions package from 0.23 to 0.23, 0.24.

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-io]

Codecov Report

Merging #39 (fa94270) into master (7a7da44) will decrease coverage by 3.15%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #39      +/-   ##
==========================================
- Coverage   78.94%   75.78%   -3.16%     
==========================================
  Files           5        5              
  Lines          57       95      +38     
==========================================
+ Hits           45       72      +27     
- Misses         12       23      +11     

Impacted Files	Coverage Δ
src/utils.jl	57.14% <0.00%> (-26.20%)	⬇️
src/ConditionalDists.jl	100.00% <0.00%> (ø)
src/cond_mvnormal.jl	80.00% <0.00%> (+5.00%)	⬆️

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.78%. Comparing base (7a7da44) to head (fa94270).
Report is 15 commits behind head on master.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master      #39      +/-   ##
==========================================
- Coverage   78.94%   75.78%   -3.16%     
==========================================
  Files           5        5              
  Lines          57       95      +38     
==========================================
+ Hits           45       72      +27     
- Misses         12       23      +11     

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