Address new failing AWS protocol-compliance tests

[Baccata]

In https://github.com/disneystreaming/smithy4s/pull/1423, the version of protocol-compliance tests that aws-http4s is working against has been bumped to 1.45.0, and some tests are now failing.

In order to avoid blocking the release whilst we take care of those new edge case details, we're ignoring the test in questions for now : https://github.com/disneystreaming/smithy4s/blob/9ec8d9a74d0fa06c40ef12f5ce0982f885decb40/modules/aws-http4s/test/src/smithy4s/aws/compliancetests/AwsComplianceSuite.scala#L52

NB : the fixes don't have to come in a single PR