Find a way to auto-detect new releases of aws-lambda-cpp

[maxday]

For now cpp builds are cloning https://github.com/awslabs/aws-lambda-cpp
It could be great to auto-dectect releases from https://github.com/awslabs/aws-lambda-cpp/releases so we could rebuild as soon as a new release is cut.
For now dependabot does not support that (see: dependabot/dependabot-core#2027)

So maybe one solution would be to create a simple bot posting an issue for every new release of awslabs/aws-lambda-cpp so we could rebuild as soon as possible

cc @marcomagdy