chore(deps): update dependency @azure/functions to v3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@azure/functions	1.2.3 -> 3.0.0

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Release Notes

Azure/azure-functions-nodejs-worker

v2.0.0

• Introduces "v1WorkerBehavior" flag which reverts everything "[Breaking]"
  • This can be enabled with the app setting FUNCTIONS_V2_COMPATIBILITY_MODE=true
    • "V2 compatability" refers to Azure Functions V2 and Node.js Worker 1.x
    • WARNING: This setting has a negative impact on performance. We recommend that you make your code compatible instead.
    • WARNING: This setting will be deprecated when Azure Functions V2 is deprecated (not planned any time soon)
• [Breaking] Support Node.js 10, 12 (except when running with v1WorkerBehavior)
• [Breaking] Does not duplicate http payload in context.bindingData
• [Breaking] Fixes #​228 (handles http output correctly on context.(null, { body: "hello" });
• [Breaking] Fix camelCase of timer trigger object: #​188
• [Breaking] Fix type conversion of code like return { outputBinding: info, outputBinding2: info };: #​232
• [Breaking] Consume "TypedDataCollection" #​262

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[glasser]

Note that they suggest we change this to a dev dep. Azure/azure-functions-nodejs-worker#467 (comment)