Annotate the boto3 1.42 -> 1.43 dependency line to reflect that 1.43 requires Python >=3.10, so 3.9 stays on the 1.42.* series.
Annotate the boto3 1.42 -> 1.43 dependency line to reflect that 1.43 requires Python >=3.10, so 3.9 stays on the 1.42.* series.