Pin boto3 and botocore
Pin boto3 and botocore

botocore 1.3.29 (new as of yesterday) breaks a few of the s3 and
lambda tests; something about a StringIO being closed prematurely.

¯\_(ツ)_/¯

boto3 doesn't pin the botocore version; as a result the new version of
botocore gets pulled in transitively, breaking today's builds.

Signed-off-by: Scott Greene <37f564f1f366d49d8a58282f7dffe04be940eecc@getbraintree.com>

Brett55/moto,botify-labs/moto,rocky4570/moto,2rs2ts/moto,spulec/moto,william-richard/moto,heddle317/moto,okomestudio/moto,whummer/moto,Brett55/moto,Affirm/moto,spulec/moto,heddle317/moto,tootedom/moto,ZuluPro/moto,im-auld/moto,kefo/moto,2rs2ts/moto,silveregg/moto,ZuluPro/moto,botify-labs/moto,william-richard/moto,whummer/moto,ZuluPro/moto,gjtempleton/moto,gjtempleton/moto,Affirm/moto,2rs2ts/moto,rocky4570/moto,ZuluPro/moto,dbfr3qs/moto,heddle317/moto,dbfr3qs/moto,Brett55/moto,Brett55/moto,spulec/moto,spulec/moto,rocky4570/moto,william-richard/moto,dbfr3qs/moto,okomestudio/moto,okomestudio/moto,spulec/moto,botify-labs/moto,ZuluPro/moto,rocky4570/moto,Affirm/moto,dbfr3qs/moto,Affirm/moto,2rs2ts/moto,william-richard/moto,okomestudio/moto,braintreeps/moto,Affirm/moto,whummer/moto,spulec/moto,Affirm/moto,okomestudio/moto,rocky4570/moto,dbfr3qs/moto,heddle317/moto,ZuluPro/moto,2rs2ts/moto,botify-labs/moto,william-richard/moto,Brett55/moto,kefo/moto,kefo/moto,william-richard/moto,whummer/moto,Brett55/moto,mrucci/moto,okomestudio/moto,botify-labs/moto,whummer/moto,botify-labs/moto,dbfr3qs/moto,kefo/moto,rocky4570/moto,IlyaSukhanov/moto,riccardomc/moto,whummer/moto,kefo/moto,gjtempleton/moto,heddle317/moto,gjtempleton/moto,gjtempleton/moto