Avoiding salt in snapshot when making awsApiCall assertions in Integ-Test

[bradodarb]

When making an aws_api_call assertion, the snapshot is invalidated each time due to the salt added to call. (Possibly a timestamp from the Authv4 request signature?)
eg:

Verifying integration test snapshots...

  CHANGED    our_repo/tests/integration/integ_kms_v2 32.985s
      Resources
[~] Custom::DeployAssert@SdkCallKMSListResourceTags AwsApiCallKMSListResourceTags50f7e1cd9016638bc161697e65966eb9 
 └─ [~] salt
     ├─ [-] 1717395124367
     └─ [+] 1717395296372