Removing the data source name lower case requirement (#2161)

* Removing the data source name lower case requirement

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

soda/contracts/soda/contracts/impl/contract_data_source.py

@@ -2,7 +2,6 @@
 
 import importlib
 import logging
-import re
 import textwrap
 from abc import ABC, abstractmethod
 
@@ -90,10 +89,6 @@ def __init__(self, data_source_yaml_file: YamlFile):
         yaml_helper: yaml_helper = YamlHelper(yaml_file=data_source_yaml_file, logs=self.logs)
         self.type = yaml_helper.read_string(self.data_source_yaml_dict, self._KEY_TYPE)
         self.name = yaml_helper.read_string(self.data_source_yaml_dict, self._KEY_NAME)
-        if isinstance(self.name, str) and not re.match("[_a-z0-9]+", self.name):
-            self.logs.error(
-                f"Data source name must contain only lower case letters, numbers and underscores.  Was {self.name}"
-            )
 
         self.sql_dialect: SqlDialect = self._create_sql_dialect()