error handling changes for Redshift

[Trianz-Akshay]

Issue #, if available:

Description of changes:
Error handling improvement changes for Athena Redshift connector. As Redshift extended Postgres so updated the file in Postgres connector.

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[Trianz-Akshay]

Access Denied Error Handling redshift.docx
PFA docs for access denied changes.

[aaronsven]

So access denied is also when the user has an invalid password. Are we covering that case?

[Trianz-Akshay]

So access denied is also when the user has an invalid password. Are we covering that case?

Invalid passwords are handled under InvalidCredentialsException, which covers scenarios like access denied due to incorrect credentials.
This is addressed in the JDBC module and the SDK as Redshift and Snowflake are DBC connectors, ensuring that such cases are appropriately managed.
I am attaching a document with screenshots for the same.
Invalid Credentials Error Handling Redshift.docx
Invalid credentials Error Handling Snowflake.docx

Link to athena-jdbc PR. (#2276)
Link to athena-federation-sdk PR. (#2278)