fix(deps): update dependency firebase-functions to ^3.7.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
firebase-functions	dependencies	minor	^3.6.2 -> ^3.7.0

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Release Notes

firebase/firebase-functions

v3.7.0

Compare Source

• Adds functions.logger SDK to enable structured logging in the Node.js 10 runtime. For example:

  const functions = require('firebase-functions');
  
  functions.logger.debug('example log with structured data', {
    uid: user.uid,
    authorized: true,
  });

• Adds a special require that mimics Node.js 8 runtime logging in Node.js 10 and later runtimes:

  require('firebase-functions/lib/logger/compat');

  In newer runtimes, requiring this will emit text logs with multi-line support and appropriate severity. In the Node.js 8 runtime, the compat module has no effect.

• Fixes https.onRequest type signature to allow Promises for async functions.

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