Inject sererless instance into emulator

[bboure]

Inject the serverless instance directly into the emulator.

See: little-bear-labs/aws-utils#92

Only to be merged after the above PR has been accepted, merged, and pushed in npm.

Also, the version of emulator should be updated in package.json

[bboure]

Theoretically, nothing breaks and all functionalities should work as before.
In addition to that, the following also works (this is not the case with the previous implementation).

sls offline start --stage staging

This is useful for example if you have environment variables per stage.

Any help testing this is welcome.

[bboure]

@aheissenberger since little-bear-labs/aws-utils#92 got merged, I updated the package here to make use of it.
This should fix many issues and improve loading time.

[aheissenberger]

all packages have been updated

[bboure]

@aheissenberger on top updating the packages, if you look at the commit, I am using a new feature of the emulator.

[aheissenberger]

@bboure sorry - I missed the change - 1.3.1 add this change

[bboure]

great thanks 👍