nodejs-getting-started fix(deps): update dependency @google-cloud/pubsub to v4

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@google-cloud/pubsub	`^3.0.0` -> `^4.0.0`
@google-cloud/pubsub	`3.1.0` -> `4.8.0`

Release Notes

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

`v4.8.0`

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Features

Add ingestion Cloud Storage fields and Platform Logging fields to Topic (#1974) (afec9a1)
Return listing information for subscriptions created via Analytics Hub (afec9a1)

`v4.7.2`

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Bug Fixes

Set MaxBytes for AckQueue (#1963) (5945563)

`v4.7.1`

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Bug Fixes

deps: Update dependency @opentelemetry/semantic-conventions to ~1.26.0 (#1945) (f082869)
deps: Update dependency protobufjs to ~7.4.0 (#1959) (25946e0)
Propagate set options to LeaseManager (from https://github.com/googleapis/nodejs-pubsub/pull/1880) (#1954) (cdb0916)

`v4.7.0`

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Features

Add support for OTel context propagation and harmonized spans (#1833) (4b5c90d)

`v4.6.0`

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Features

Add max messages batching for Cloud Storage subscriptions (#1956) (90546f6)
Add use_topic_schema for Cloud Storage Subscriptions (#1948) (120fa1b)

Bug Fixes

docs samples: Update missing argv in sample metadata for push subscription (#1946) (34b8c03)

`v4.5.0`

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Features

Add service_account_email for export subscriptions (#1927) (c532854)

`v4.4.1`

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Bug Fixes

An existing message UpdateVehicleLocationRequest is removed (5451d15)
An existing method SearchFuzzedVehicles is removed from service VehicleService (5451d15)
An existing method UpdateVehicleLocation is removed from service VehicleService (5451d15)
deps: Update dependency protobufjs to ~7.3.0 (#1921) (c5afd34)
Pull in new gax for protobufjs vuln fix (#1925) (8024c6d)

`v4.4.0`

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Features

Add several fields to manage state of database encryption update (#1904) (aba9aee)

Bug Fixes

deps: Update dependency @types/long to v5 (#1901) (d13d395)

`v4.3.3`

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Bug Fixes

Add client library version to headers (#1891) (6b59195)

`v4.3.2`

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Bug Fixes

Update minimum google-gax versions for auth fixes (#1888) (08acade)

`v4.3.1`

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Bug Fixes

Add option to manually control emulator auth handling, and fix heuristics for TPC (#1861) (761cdc8)

`v4.3.0`

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Features

Trusted Private Cloud support, use the universeDomain parameter (#1878) (d89fd1d)

Bug Fixes

Updated google-gax required for TPC (#1882) (1445856)

`v4.2.0`

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Features

Add enforce_in_transit fields and optional annotations (#1873) (09fc424)
Add schema revision samples (#1870) (044e149)

Bug Fixes

deps: Update dependency @opentelemetry/semantic-conventions to ~1.20.0 (#1871) (2ee0dba)
deps: Update dependency @opentelemetry/semantic-conventions to ~1.21.0 (#1876) (0fe61a9)

`v4.1.1`

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Bug Fixes

Correct long audio synthesis HTTP binding (#1867) (65940a4)
deps: Update dependency @opentelemetry/semantic-conventions to ~1.19.0 (#1862) (92259f5)

`v4.1.0`

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Features

Add use_table_schema field to BigQueryConfig (#1858) (2875d83)

`v4.0.7`

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Bug Fixes

deps: Update dependency @opentelemetry/semantic-conventions to ~1.18.0 (#1852) (d9a0432)
Set x-goog-request-params for streaming pull request (#1849) (7b82ff0)

`v4.0.6`

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Bug Fixes

Bump the minimum gax up to 4.0.4 to get grpc-js fixes (#1829) (cc86e2b)
deps: Update dependency @opentelemetry/semantic-conventions to ~1.17.0 (#1824) (679c6b8)