chore(deps): update dependency @google-cloud/pubsub to v5

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Confidence
@google-cloud/pubsub	^4.0.0 -> ^5.0.0

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Release Notes

googleapis/nodejs-pubsub (@​google-cloud/pubsub)

v5.2.0

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Features

• Ad-hoc, targeted debug logging (#​2062) (dce83c7)
• Add timeout option and graceful shutdown to Subscription.close() (#​2068) (8dee024)

v5.1.0

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Features

• Add SchemaViolationReason to IngestionFailureEvent (#​2045) (3348e3e)
• Use specific W3CTraceContextPropagator for OTel (#​2036) (c9a9656)

Bug Fixes

• deps: Update dependency @​opentelemetry/semantic-conventions to ~1.33.0 (#​2038) (4eb46c5)
• deps: Update dependency @​opentelemetry/semantic-conventions to ~1.34.0 (#​2048) (1072c2d)
• deps: Update dependency protobufjs to ~7.5.0 (#​2041) (b65eaeb)
• Set messaging.operation in createAttributes (#​2030) (b8d513a)

v5.0.0

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⚠ BREAKING CHANGES

• migrate to Node 18 (#​2024)
• remove (broken) legacy OTel support
• remove legacy ack deadline options
• move maxExtension into subscriber options

Miscellaneous Chores

• Migrate to Node 18 (#​2024) (9ad808a)

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