use util.UnsortedKeys

Co-authored-by: Daniel Bradley <[email protected]>

provider/pkg/versioning/gen.go

@@ -122,10 +122,7 @@ func (v VersionMetadata) GetOldApiVersionsPerModule() map[openapi.ModuleName][]o
 
 		// If there are any old versions, sort them and add them to the result.
 		if len(oldVersionsSet) > 0 {
-			oldVersions := []openapi.ApiVersion{}
-			for version := range oldVersionsSet {
-				oldVersions = append(oldVersions, version)
-			}
+			oldVersions := util.UnsortedKeys(oldVersionsSet)
 			slices.SortStableFunc(oldVersions, openapi.CompareApiVersions)
 			result[moduleName] = oldVersions
 		}