[fix][io] Upgrade Debezium connector version to 2.6.1.Final

[mukesh154]

Fixes apache#22626

Motivation

To Upgrade debezium version to 2.6.1.Final for all source connectors.

It will address this comment as well.

Modifications

Upgraded debezium version from 1.9.7.Final to 2.6.1.Final all debezium source connectors which includes mysql, postgresql, mongodb, mssql & oracle.

Verifying this change

• Make sure that the change passes the CI checks.

(example:)

• Added integration tests for end-to-end deployment with large payloads (10MB)
• Extended integration test for recovery after broker failure

Does this pull request potentially affect one of the following parts:

If the box was checked, please highlight the changes

• Dependencies (add or upgrade a dependency)
• The public API
• The schema
• The default values of configurations
• The threading model
• The binary protocol
• The REST endpoints
• The admin CLI options
• The metrics
• Anything that affects deployment

Documentation

Check the box below or label this PR directly (if you have committer privilege).

Need to update docs?

• doc
• doc-required
• doc-not-needed
• doc-complete