Added voluptuous library under Data Validation section

Removed the voluptuous library from the data validation section.

Author: poojitha-sys281

README.md

@@ -467,6 +467,7 @@ _Libraries for validating data. Used for forms in many cases._
 - [jsonschema](https://github.com/python-jsonschema/jsonschema) - An implementation of [JSON Schema](http://json-schema.org/) for Python.
 - [pandera](https://github.com/unionai-oss/pandera) - A data validation library for dataframes, with support for pandas, polars, and Spark.
 - [pydantic](https://github.com/pydantic/pydantic) - Data validation using Python type hints.
+- [voluptuous](https://github.com/alecthomas/voluptuous) - A Python data validation library primarily intended for validating data from untrusted sources.
 
 ## Data Visualization