fix(deps): update dependency pystac to v1.12.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
pystac (changelog)	==1.11.0 -> ==1.12.0

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Release Notes

stac-utils/pystac (pystac)

v1.12.0

Compare Source

Added

• Top-level item_assets dict on Collections (#​1476)
• Render Extension (#​1465)
• Filter by links by list of media_types

Changed

• Write STAC v1.1.0 (#​1427)
• Use uv for development dependencies and docs (#​1439)
• Correctly detect absolute file path ref on windows, reflecting change in python 3.13 (#​1475) (only effects python 3.13)
• Deprecated ItemAssetExtension (#​1476)
• Update Projection Extension to version 2 - proj:epsg -> proj:code (#​1287)
• Update migrate code to handle license changes in STAC spec 1.1.0 (#​1491)
• Allow links to have file:// prefix - but don't write them that way by default (#​1489)
• For get_root_link, get_child_links, get_item_links: Ensure json media types (#​1497)
• Raise STACError with message when a link is expected to resolve to a STAC object but doesn't (#​1500)
• Raise an error on APILayoutStrategy when root_href is non-url (#​1498)

Fixed

• Use application/geo+json for item links (#​1495)
• Includes the scientific extension in Item's ext interface (#​1496)
• Fixes all broken documentation links and adds check to CI (#​1499)

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