cvat-sdk/gen/postprocess.py: don't suppress exceptions from `process_file` (#5740)

Suppressing the exception means that the script returns a success exit
code (preventing errors from being noticed) and that the stacktrace is
omitted from the output (preventing errors from being easily analyzed).

cvat-sdk/gen/postprocess.py

@@ -107,7 +107,7 @@ class Replacer:
             try:
                 self.process_file(filename)
             except Exception as e:
-                print(f"Failed to process file '{osp.basename(filename)}': {e}")
+                raise RuntimeError(f"Failed to process file {filename!r}") from e
 
 
 def parse_schema(path):