CompatHelper: bump compat for IMASdd to 3, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the IMASdd package from 2 to 2, 3.
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

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 32.75%. Comparing base (de997ac) to head (a6be118).
Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
src/types.jl	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #74      +/-   ##
==========================================
- Coverage   35.39%   32.75%   -2.64%     
==========================================
  Files           5        4       -1     
  Lines         582      580       -2     
==========================================
- Hits          206      190      -16     
- Misses        376      390      +14     

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