[Snyk] Security upgrade firebase-admin from 10.0.0 to 12.0.0

[JozGonzalez]

Snyk has created this PR to fix 10 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• auth/functions/package.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Prototype Pollution SNYK-JS-PROTOBUFJS-5756498	751
	Prototype Pollution SNYK-JS-PROTOBUFJS-2441248	731
	Regular Expression Denial of Service (ReDoS) SNYK-JS-SEMVER-3247795	696
	Open Redirect SNYK-JS-NODEFORGE-2330875	586
	Improper Verification of Cryptographic Signature SNYK-JS-NODEFORGE-2430339	579
	Information Exposure SNYK-JS-NODEFETCH-2342118	539
	Prototype Pollution SNYK-JS-NODEFORGE-2331908	529
	Improper Verification of Cryptographic Signature SNYK-JS-NODEFORGE-2430337	494
	Improper Verification of Cryptographic Signature SNYK-JS-NODEFORGE-2430341	494
	Denial of Service (DoS) SNYK-JS-JOSE-3018688	479

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• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

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Learn how to fix vulnerabilities with free interactive lessons:

🦉 Denial of Service (DoS)
🦉 Open Redirect
🦉 Prototype Pollution