return Sorted conformances classes (#787)

Author: vincentsarago

CHANGES.md

@@ -1,6 +1,10 @@
 # Changelog
 
-## Unreleased
+## [Unreleased]
+
+### Changed
+
+- sort conformance classes
 
 ### Fixed
 

stac_fastapi/types/stac_fastapi/types/core.py

@@ -350,7 +350,7 @@ def conformance_classes(self) -> List[str]:
             extension_classes = getattr(extension, "conformance_classes", [])
             base_conformance_classes.extend(extension_classes)
 
-        return list(set(base_conformance_classes))
+        return sorted(list(set(base_conformance_classes)))
 
     def extension_is_enabled(self, extension: str) -> bool:
         """Check if an api extension is enabled."""
@@ -581,7 +581,7 @@ def conformance_classes(self) -> List[str]:
             extension_classes = getattr(extension, "conformance_classes", [])
             conformance_classes.extend(extension_classes)
 
-        return list(set(conformance_classes))
+        return sorted(list(set(conformance_classes)))
 
     def extension_is_enabled(self, extension: str) -> bool:
         """Check if an api extension is enabled."""