Remove numpy pin

Author: znicholls

.github/workflows/ci.yaml

@@ -107,7 +107,6 @@ jobs:
       - name: Get version windows
         if: matrix.os == 'windows-latest'
         run: |
-          uv add 'numpy==2.0.2'
           chcp 65001  # use utf-8
           uv run python -c 'import pandas_openscm; f = open("version.txt", "w"); f.write(f"INSTALLED_VERSION=v{pandas_openscm.__version__}"); f.close()'
           echo "Showing version.txt"