Update lambda-local dependency to 2.0.3

[robvanderleek]

In the console I'm seeing these two warning lines for every function invocation:

warning Using both auth systems: aws_access_key/id and secret_access_token ! warning Using both auth systems: aws_access_key/id and secret_access_token !

I've tracked down the origin of these warnings to lambda-local, a library this repo depends on to locally run the serverless functions. The maintainers of lambda-local have removed the warnings (see this issue) in version 2.0.3.

What's the process now to update the lambda-local dependency of this repo to 2.0.3? Do we wait for the renovate bot of should I create a bump PR?