[AIRFLOW-5803] Update S3Hook import paths [AIP-21]

[mingrammer]

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Reopen with a new aws provider path (refer: #6465)

[codecov-io]

Codecov Report

Merging #6535 into master will decrease coverage by 0.28%.
The diff coverage is 100%.

@@ Coverage Diff @@## master #6535 +/- ##
==========================================
- Coverage 84.07% 83.78% -0.29% 
==========================================
Files 636 636 Lines 36853 36853 ==========================================
- Hits 30983 30878 -105 - Misses 5870 5975 +105

Impacted Files	Coverage Δ
airflow/contrib/hooks/wasb_hook.py	100% <ø> (ø)	⬆️
airflow/sensors/s3_key_sensor.py	100% <100%> (ø)	⬆️
airflow/contrib/operators/s3_to_gcs_operator.py	86.44% <100%> (ø)	⬆️
airflow/sensors/s3_prefix_sensor.py	100% <100%> (ø)	⬆️
...rflow/contrib/operators/s3_copy_object_operator.py	100% <100%> (ø)	⬆️
airflow/operators/google_api_to_s3_transfer.py	100% <100%> (ø)	⬆️
airflow/operators/gcs_to_s3.py	94.73% <100%> (ø)	⬆️
airflow/operators/redshift_to_s3_operator.py	97.14% <100%> (ø)	⬆️
...ontrib/operators/imap_attachment_to_s3_operator.py	100% <100%> (ø)	⬆️
airflow/operators/s3_to_redshift_operator.py	100% <100%> (ø)	⬆️
... and 17 more

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[potiuk]

Thanks @mingrammer !