Replace boto library with boto3 or AWS4Auth

[nspadaccino]

Currently the boto library is used to authenticate requests. The boto library is now end of life and doesn't work with python>=3.12. The boto library should be replaced with boto3, or the AWS4Auth library, which may be better suited for simply authenticating requests with AwsSigV4.

[jhg03a]

Note that Python 3.11 is EOL 10/2027 and python3.14 is due out later this year.