Drop python 3.10

[fmigneault]

Description

BREAKING: stac-model>=0.6.0 drops Python 3.10 support. Python 3.11+ is now required.

An equivalent release stac-model==0.5.3 with the same changes is provided for users that want to continue using Python 3.10.

• Removed Python 3.10 from CI test matrix.
• Removed Python 3.10 specific dependency constraints for torch, torchgeo, and torchvision.
• Updated minimum Python version from >=3.10 to >=3.11.
• Note: This affects only the stac-model package versioning. The MLM specification itself (v1.5.x)
  remains independently versioned and does not indicate Python version requirements.

Related Issue

n/a

Type of Change

• 📚 Examples, docs, tutorials or dependencies update;
• 🔧 Bug fix (non-breaking change which fixes an issue);
• 🥂 Improvement (non-breaking change which improves an existing feature);
• 🚀 New feature (non-breaking change which adds functionality);
• 💥 Breaking change (fix or feature that would cause existing functionality to change);
• 🔐 Security fix.

Checklist

• I've read the CONTRIBUTING.md guide;
• I've updated the CHANGELOG.md with provided changes;
• I've updated the README.md and/or best-practices.md as applicable with new features;
• I've updated the code style using make check;
• I've written tests for all new methods and classes that I created;
• I've written the docstring in Google format for all the methods and classes that I used.