py-boto3: updated to 1.5.30

1.5.30
api-change:mediaconvert: [botocore] Update mediaconvert client to latest version
api-change:gamelift: [botocore] Update gamelift client to latest version

1.5.29
api-change:appsync: [botocore] Update appsync client to latest version
api-change:lex-models: [botocore] Update lex-models client to latest version

1.5.28
api-change:glacier: [botocore] Update glacier client to latest version
api-change:route53: [botocore] Update route53 client to latest version

1.5.27
api-change:guardduty: [botocore] Update guardduty client to latest version
api-change:cognito-idp: [botocore] Update cognito-idp client to latest version
api-change:rds: [botocore] Update rds client to latest version
api-change:ec2: [botocore] Update ec2 client to latest version
api-change:kms: [botocore] Update kms client to latest version

1.5.26
api-change:lex-runtime: [botocore] Update lex-runtime client to latest version
api-change:ec2: [botocore] Update ec2 client to latest version
api-change:lex-models: [botocore] Update lex-models client to latest version

1.5.25
api-change:ds: [botocore] Update ds client to latest version
api-change:appstream: [botocore] Update appstream client to latest version
api-change:medialive: [botocore] Update medialive client to latest version
api-change:budgets: [botocore] Update budgets client to latest version
api-change:gamelift: [botocore] Update gamelift client to latest version
api-change:dynamodb: [botocore] Update dynamodb client to latest version
api-change:dms: [botocore] Update dms client to latest version
api-change:mediastore: [botocore] Update mediastore client to latest version

(adam)