Replace boto-based exceptions from bulk_email

[awais786]

Context

We are currently removing the usage of boto from the edx-platform as boto isn't supported anymore. So we are shifting anything that currently uses boto to use boto3. The following files are importing exceptions from boto which should now be used from botocore.

Files

• lms/djangoapps/bulk_email/tasks.py
• lms/djangoapps/bulk_email/tests/test_tasks.py

Exceptions

from boto.exception import AWSConnectionError
from boto.ses.exceptions import (
    SESAddressBlacklistedError,
    SESAddressNotVerifiedError,
    SESDailyQuotaExceededError,
    SESDomainEndsWithDotError,
    SESDomainNotConfirmedError,
    SESIdentityNotVerifiedError,
    SESIllegalAddressError,
    SESLocalAddressCharacterError,
    SESMaxSendingRateExceededError
)

A/C

• Remove usage of boto from the above-mentioned files.

[awais786]

boto/boto3#2342

[awais786]

django-ses has removed usage of boto in this PR.

edx is using latest version of django-ses so it means boto.ses.exceptions are not functional. Need to verify this on splunk or newrelic also.

[awais786]

https://botocore.amazonaws.com/v1/documentation/api/latest/reference/services/ses.html#client-exceptions

[iamsobanjaved]

As per the above comments and logs checking from Splunk, we think these exceptions are neither being raised nor being caught now. So we did an effort to replace these exceptions with ones that we think should be raised now. We still need a review from owning squad on this.

PR: #31827