Set version to 0.48.0

[lgoettgens]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.96%. Comparing base (a67724b) to head (296a6ec).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1973   +/-   ##
=======================================
  Coverage   87.95%   87.96%           
=======================================
  Files          98       98           
  Lines       36450    36450           
=======================================
+ Hits        32061    32062    +1     
+ Misses       4389     4388    -1     

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[ChrisRackauckas]

What's the breaking change with this version?

[lgoettgens]

What's the breaking change with this version?

Please see the recently merged PRs with breaking label in https://github.com/Nemocas/AbstractAlgebra.jl/issues?q=sort%3Aupdated-desc+label%3Abreaking and https://github.com/Nemocas/Nemo.jl/issues?q=sort%3Aupdated-desc+label%3Abreaking+is%3Aclosed
Most things from the list are only technically breaking and we expect no changes needed downstream. The only thing you would need to check for is #1935, everything else should be fine if your CI succeeds