fix: remove obsolete boto3 extra from aiobotocore dependency

[nidhi1603]

Remove obsolete [boto3] extra from aiobotocore dependency in Amazon provider's pyproject.toml.

aiobotocore 3.3.0 removed the boto3 extra (aio-libs/aiobotocore#1424).
Since boto3 is already a required dependency of the Amazon provider package, the extra is unnecessary.

closes: #64283

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[jroachgolf84]

@nidhi1603 - what were some of the tests that you ran here?

[nidhi1603]

@nidhi1603 - what were some of the tests that you ran here?

I verified that boto3 remains a direct dependency in the Amazon provider's pyproject.toml (listed under [project] dependencies), so removing the [boto3] extra from aiobotocore doesn't change what gets installed.
I didn't have a full Airflow environment set up to run a deferrable AWS operator end-to-end. If you'd like me to set that up and test a specific operator, happy to do so — any recommendation on which one to use?

[jroachgolf84]

I'd suggest checking out the documentation for running Airflow locally with breeze. @vincbeck provided a scenario that makes sense to test.

[nidhi1603]

I'd suggest checking out the documentation for running Airflow locally with breeze. @vincbeck provided a scenario that makes sense to test.

I set up Breeze locally and validated this change in the Airflow Breeze environment.

Environment:

• Python 3.10
• PostgreSQL backend

I also verified inside the Breeze container that the relevant packages resolve correctly after removing the obsolete [boto3] extra:

• aiobotocore 2.26.0
• boto3 1.41.5
• botocore 1.41.5

I then ran the Amazon provider deferrable test sweep with:

pytest providers/amazon/tests -k deferrable -q | tee /tmp/amazon_deferrable_test.txt

Result:

• 56 passed
• 3743 deselected
• 1 warning

So the deferrable AWS operator/sensor paths are working correctly on my side after this dependency change.