fix: use AnyUrl for comparisons

This worked as-was in pydantic v2.9 but not in v2.10

Author: gadomski

Diff for: stac_pydantic/api/landing.py

@@ -35,7 +35,7 @@ def required_links(self) -> "LandingPage":
             ), f"STAC API conform Landing pages must include a `{rel}` link."
 
         if (
-            HttpUrl(f"https://api.stacspec.org/v{STAC_API_VERSION}/collections")
+            AnyUrl(f"https://api.stacspec.org/v{STAC_API_VERSION}/collections")
             in self.conformsTo
         ):
             required_collections_rels = [Relations.data]