Raise the error to trigger mail to customers for the new connections from v2 to v3

[sgandhi1311]

Description of change

This PR introduces a mechanism to notify customers still using tap version 2 to upgrade to version 3, which has been in production for over 3 months.
The warning is raised by checking - At least 7 days have passed since the last notification
The last_exception_triggered timestamp is stored in the tap’s Singer state using singer.write_bookmark().

QA steps

• automated tests passing
• manual qa steps passing (list below)

Risks

Rollback steps

• revert this branch

AI generated code

https://internal.qlik.dev/general/ways-of-working/code-reviews/#guidelines-for-ai-generated-code

• this PR has been written with the help of GitHub Copilot or another generative AI tool