Are you certain it's a bug?

• Yes, it looks like a bug

Is the issue caused by a plugin?

• It is not a plugin issue

Are you using the latest v3 release?

• Yes, I'm using the latest v3 release

Is there an existing issue for this?

• I have searched existing issues, it hasn't been reported yet

Issue description

When setting provider.runtime to `` I'm getting following warning:

Warning: Invalid configuration encountered
  at 'provider.runtime': must be equal to one of the allowed values [dotnet6, go1.x, java17, java11, java8, java8.al2, nodejs14.x, nodejs16.x, nodejs18.x, provided, provided.al2, python3.7, python3.8, python3.9, python3.10, python3.11, ruby2.7, ruby3.2]

However, it deploys just fine and lists Node.js 20 as the used runtime in AWS Lambda.

Service configuration (serverless.yml) content

service: cron-execute
frameworkVersion: "3"

provider:
  name: aws
  runtime: nodejs20.x

functions:
  cronHandler:
    handler: src/test.main
    events:
      - schedule: cron(0/10 * * * ? *)

Command name and used flags

serverless deploy

Command output

N/A

Environment information

Framework Core: 3.36.0 (local)
Plugin: 7.1.0
SDK: 4.4.0