CompatHelper: bump compat for AlgebraicRewriting to 0.3, (keep existing compat)

[algebraicjuliabot]

This pull request changes the compat entry for the AlgebraicRewriting package from 0.2.1 - 0.3.1 to 0.2.1 - 0.3.1, 0.3. 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[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 61.51%. Comparing base (c7a0faf) to head (28a15ac). Report is 4 commits behind head on main.

:exclamation: Current head 28a15ac differs from pull request most recent head cdaf02f

Please upload reports for the commit cdaf02f to get more accurate results.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #121 +/- ## ======================================= Coverage 61.51% 61.51% ======================================= Files 10 10 Lines 2193 2193 ======================================= Hits 1349 1349 Misses 844 844 ```

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