build(deps): bump firebase-functions from 3.14.0 to 3.15.7 in /functions

[dependabot]

Bumps firebase-functions from 3.14.0 to 3.15.7.

Release notes

Sourced from firebase-functions's releases.

v3.15.7

• Adjust acceptable runtime options values

v3.15.6

• Add missing type annotations

v3.15.5

• Make the minInstances feature public.

v3.15.4

• Fix bug where the arg of https onCall functions sometimes deviates from the documented format.

v3.15.3

• (temporarly) adds the previously accessible "lib/providers" files as exports. These will be yanked in the next major release.
• Fixes a bug where functions.https.HttpsError could not be constructed

v3.15.2

• Fix an error that broke firebase emulators:start on older CLIs

v3.15.1

• Fix bug that broke the functions emulator

v3.15.0

• Adds options to set access control on HTTP triggered functions.
• Adds new regions to support list (asia-east1, asia-southeast1).
• Adds support for setting user labels on functions via runWith().
• Adds support for FIREBASE_CONFIG env as the name of a JSON file
• Fixes an issue where objects that define toJSON could not be logged successfully (#907).
• Formalize module exports. Loggers can now be accessed at 'firebase-functions/logger' and 'firebase-functions/logger/compat'
• Fixes an issue where Remote Config could not be emulated in Windows machines on the classic Command Prompt.

v3.14.1

• Fixes a bug where typescript would fail to compile with old (but supported) versions of firebase-admin
• Replaces 3.13.3 which was an inappropriately numbered version

Commits

• 347a381 3.15.7
• 0a40a56 Adjust acceptable options values (#980)
• b6cb797 [firebase-release] Removed change log and reset repo after 3.15.6 release
• 6cee06e 3.15.6
• 5ced4a4 Add missing type annotations (#974)
• d46ec61 [firebase-release] Removed change log and reset repo after 3.15.5 release
• c5beb04 3.15.5
• 50dcd82 Release minInstances feature (#966)
• fb1fe3d moving invoker into HttpsTrigger block and adding more tests (#960)
• 1a727bb Tiny change to bring API reference TOC source up to date (#958)
• Additional commits viewable in compare view

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[dependabot]

Superseded by #700.