feat: adds Python 3.11 to the supported runtime config

[KyleOps]

There's already New Relic AWS Lambda Layer Python 3.11 available - https://layers.newrelic-external.com/
however when installing the layer via:

newrelic-lambda layers install --layer-arn "arn:aws:lambda:ap-southeast-2:451483290750:layer:NewRelicPython311:4"
one is getting Unsupported Lambda runtime for 'arn:aws:lambda:ap-southeast-2:***:function:name-of-lambda-fn': python3.11

Based on previous work such as #241

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[KyleOps]

Pinging @lrafeei @TimPansino for a review 🙏