Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

When run the test with a user defined class Myvanna.

class MyVanna(ChromaDB_VectorStore, OpenAI_Chat):
    def __init__(self, config=None):
        ChromaDB_VectorStore.__init__(self, config=config)
        OpenAI_Chat.__init__(self, config=config)

this code comes error:

Can't instantiate abstract class MyVanna without an implementation for abstract method 'search_tables_metadata'

Expected behavior
No error

Error logs/Screenshots

Can't instantiate abstract class MyVanna without an implementation for abstract method 'search_tables_metadata'

Desktop (please complete the following information where):

• OS: [e.g. macOS]
• Version: [15.2]
• Python: [3.12.2]
• Vanna: [master branch, commit:ad014c44a4bf5bd15ffb576ffd85578ad17e1a2f]

Additional context
Add any other context about the problem here.