build(deps): Update aws-sdk-kms requirement from 0.30.0 to 1.28.0 #159

Job	Run time
unit tests	4m 21s
clippy	2m 46s
avalanchego-conformance-tests	2m 50s
avalanchego-byzantine-tests	4m 29s
avalanchego-integration-tests	7m 52s
docs	2m 31s
fmt	4s
	24m 53s

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