Bump protobufjs, @firebase/rules-unit-testing and firebase in /unit-test-security-rules-v9#422

dependabot[bot] wants to merge 1 commit intomasterfirebase/quickstart-testing:masterfrom

dependabot/npm_and_yarn/unit-test-security-rules-v9/multi-938596a91afirebase/quickstart-testing:dependabot/npm_and_yarn/unit-test-security-rules-v9/multi-938596a91aCopy head branch name to clipboard