Pin maturin to 1.7.8 for Windows build wheel CI (#7120)

maturin>1.7.8 breaks dependency y-py (Python 3.12) and pywinpty (Python 3.8) wheel building.
MichaIng/DietPi#7329 (comment)

.github/workflows/windows.yml

@@ -269,6 +269,9 @@ jobs:
         working-directory: ${{ env.SRC_DIR }}
         run: |
           $ErrorActionPreference = 'Stop'
+          # maturin>1.7.8 breaks dependency y-py (Python 3.12) and pywinpty (Python 3.8) wheel building
+          # https://github.com/MichaIng/DietPi/issues/7329#issuecomment-2565130837
+          python -m pip install maturin==1.7.8
           python -m pip install -r python/requirements.txt
           python -m pip install -r python/requirements_jupyter_build.txt