Change dep (and base python) requirements to accomodate Pyneats

[avivace]

• Base python required version to 3.11.5
• "pandas>=3.0.1" to "pandas>=2.3.3"
• "xarray >=2026.2.0" to "xarray>=2024.10.0"

cc @JarryGabriel

[avivace]

xarray constraint to be relaxed upon further tests by Pyneats team