Update dependency @google-cloud/dialogflow to v3

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This PR contains the following updates:

Package	Type	Update	Change
@google-cloud/dialogflow (source)	dependencies	major	^2.0.0 -> ^3.0.0

By merging this PR, the below vulnerabilities will be automatically resolved:

Severity	CVSS Score	Vulnerability
Medium	6.1	CVE-2022-0235
Low	3.7	CVE-2017-16137
Low	2.6	CVE-2020-15168

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Release Notes

googleapis/google-cloud-node (@​google-cloud/dialogflow)

v3.0.0

⚠ BREAKING CHANGES

• only v1 clients must be exported by default (#​619)
• proper long running operation returned from Agent v2beta1 calls (#​621)

Features

• check status of long running operation by its name (#​606) (77b28f1)
• proper long running operation returned from Agent v2beta1 calls (#​621) (ff509cd)

Bug Fixes

• deps: update dependency uuid to v8 (#​602) (9cec1be)
• exception occurred in retry method (#​615) (b8b2ccd)
• only v1 clients must be exported by default (#​619) (d1fb5ab)

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⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

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• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
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The artifact failure details are included below:

File name: firebase/JavaScript/functions/package-lock.json