[Snyk] Security upgrade @google-cloud/pubsub from 2.19.4 to 3.0.0

[snyk-bot]

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

As this is a private repository, Snyk-bot does not have access. Therefore, this PR has been created automatically, but appears to have been created by a real user.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • package.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Issue	Breaking Change	Exploit Maturity
	Prototype Pollution SNYK-JS-PROTOBUFJS-2441248	Yes	Proof of Concept

Commit messages

Package name: @google-cloud/pubsub

The new version differs by 8 commits.

• 179b617 chore(main): release 3.0.0 (#1556)
• 158c606 fix: fixes for dynamic routing and streaming descriptors (#1566)
• adb4319 build!: update library to use Node 12 (#1564)
• b173d4c docs: fix #1559 publishMessage return type documentation (#1560)
• 29d38a1 feat: add BigQuery configuration for subscriptions (#1563)
• 518fce1 fix(deps): update dependency google-gax to v2.30.4 (#1555)
• 39c6729 chore(deps): update dependency sinon to v14 (#1553)
• 6224648 build: update auto approve to v2, remove release autoapproving (#1432) (#1551)

See the full diff

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