added more instructions

Author: Andrei Neagu

requirements/constraints.txt

@@ -75,6 +75,6 @@ referencing==0.35.1
 # moto==5.0.21 broke `get_ec2_instance_capabilities`
 moto<5.0.21
 
-
 # Pin boto3<1.36.0 till the following is addressed https://github.com/boto/botocore/issues/2308
+# when removing this pin, also update the aws cli inside ci/github/helpers/install_aws_cli_v2.bash
 boto3<1.36.0