Allows using more recent versions of numpy

[thorbjoernl]

Change Summary

Makes changes required for pyaerocom to work with numpy>=2.0.0

Related issue number

closes #1206

Checklist

• Start with a draft-PR
• The PR title is a good summary of the changes
• PR is set to AeroTools and a tentative milestone
• Documentation reflects the changes where applicable
• Tests for the changes exist where applicable
• Tests pass locally
• Tests pass on CI
• At least 1 reviewer is selected
• Make PR ready to review

[codecov]

Codecov Report

Attention: Patch coverage is 91.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 78.56%. Comparing base (974cc33) to head (5465d23).
Report is 69 commits behind head on main-dev.

Files with missing lines	Patch %	Lines
pyaerocom/io/gaw/reader.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##           main-dev    #1396   +/-   ##
=========================================
  Coverage     78.56%   78.56%           
=========================================
  Files           137      137           
  Lines         20921    20905   -16     
=========================================
- Hits          16436    16424   -12     
+ Misses         4485     4481    -4     

Flag	Coverage Δ
unittests	78.56% <91.66%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[heikoklein]

Thanks, looks good.