Unpin parmed w/ numpy v2

[IAlibay]

Fixes #4625

Apparently parmed 4.3 now supports np 2+, let's test it out.

PR Checklist

• Tests?
• Docs?
• CHANGELOG updated?
• Issue raised/referenced?

Developers certificate of origin

• I certify that this contribution is covered by the LGPLv2.1+ license as defined in our LICENSE and adheres to the Developer Certificate of Origin.

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📚 Documentation preview 📚: https://mdanalysis--4883.org.readthedocs.build/en/4883/

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 93.65%. Comparing base (1eca9f2) to head (c2202f7).

Files with missing lines	Patch %	Lines
package/MDAnalysis/converters/ParmEd.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4883      +/-   ##
===========================================
- Coverage    93.66%   93.65%   -0.01%     
===========================================
  Files          177      189      +12     
  Lines        21796    22857    +1061     
  Branches      3067     3065       -2     
===========================================
+ Hits         20415    21407     +992     
- Misses         929      999      +70     
+ Partials       452      451       -1     

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