fix:

    Conftest encounters errors on Windows when loading file paths that include drive letters (e.g., `C:/path/to/data.yaml`).
    Even when using a file URL (e.g., `file:///C:/path/to/data.yaml`), we still face issues.
    With these code changes, Conftest can now successfully load files using a file URL (e.g., `file:///C:/path/to/data.yaml`).
    We opted for file URLs instead of paths with drive letters (e.g., `C:/path/to/data.yaml`) because OPA does not support file paths with drive letters. For more details, see [this issue comment](open-policy-agent/opa#6922 (comment)).

    Resolves: #979

Signed-off-by: Punith C K <[email protected]>

policy/engine.go

@@ -134,7 +134,9 @@ func LoadWithData(policyPaths []string, dataPaths []string, capabilities string,
 		return nil, fmt.Errorf("filter data paths: %w", err)
 	}
 
-	documents, err := loader.NewFileLoader().All(allDocumentPaths)
+	documents, err := loader.NewFileLoader().WithProcessAnnotation(true).Filtered(dataPaths, func(_ string, info os.FileInfo, _ int) bool {
+		return !info.IsDir() && !contains([]string{".yaml", ".yml", ".json"}, filepath.Ext(info.Name()))
+	})
 	if err != nil {
 		return nil, fmt.Errorf("load documents: %w", err)
 	}