Bump cloud.google.com/go/bigtable from 1.36.0 to 1.42.0 in /sdks

[dependabot]

Bumps cloud.google.com/go/bigtable from 1.36.0 to 1.42.0.

Release notes

Sourced from cloud.google.com/go/bigtable's releases.

bigtable 1.42.0

1.42.0 (2026-02-04)

Features

• add TieredStorageConfig to table admin api (PiperOrigin-RevId: 863493708) (611f2392)

• add dynamic channel support (#2) (#13504) (65a3c4ec)

• add ip protocol for bigtable connection (#13520) (6f86983e)

• add metrics exporter for outstandingrpcs and perconnectionerror count (#13510) (7f1b36ac)

• add client startup time metrics. (#13521) (8f90da38)

• introduce prime() method and load counting based on unary,streaming and ability to remove connection (#13419) (c6773ceb)

Bug Fixes

• handle client region and client host name based on ote… (#13752) (0429170f)

• fix a nil pointer deference in remove connections when… (#13535) (9d2ba82e)

Performance Improvements

• use passthrough with emulator endpoint (#13739) (dafbca22)

bigtable: v1.41.0

1.41.0 (2025-12-15)

Features

• add PeerInfo proto in Bigtable API (PiperOrigin-RevId: 829585900) (185951b3)

• precompute featureflags in client and reuse (#13297) (3b3253ac)

• Add experimental Bigtable connection pool with custom load balancing strategy. (#12882) (7aa96127)

• Enable ALTS hard bound token in Bigtable w/ direct access (#13153) (90239341)

• Enable routing cookie and attempt headers for enhanced retries (#12964) (96cfd47a)

Bug Fixes

• fix project id sent in otel (#13286) (4865868c)

• screaming uppercase metric status (#13484) (b35ee8fd)

Performance Improvements

... (truncated)

Changelog

Sourced from cloud.google.com/go/bigtable's changelog.

Changes

1.40.0 (2026-01-29)

Documentation

• Fixed language issues in multiple message field descriptions (d8ea738)
• Regenerated REST and RPC Document AI documentation to include missing changes from September 2024 to November 2025 (d8ea738)

1.39.0 (2025-10-09)

Features

• documentai: A new enum Method is added (a93d961)
• documentai: A new enum Method is added (a93d961)
• documentai: A new field annotations is added to message .google.cloud.documentai.v1beta3.Document (a93d961)
• documentai: A new field annotations is added to message .google.cloud.documentai.v1beta3.Document (a93d961)
• documentai: A new field entities_revision_id is added to message .google.cloud.documentai.v1beta3.Document (a93d961)
• documentai: A new field entities_revisions is added to message .google.cloud.documentai.v1beta3.Document (a93d961)
• documentai: A new field entity_validation_output is added to message .google.cloud.documentai.v1beta3.Document (a93d961)
• documentai: A new field method is added to message .google.cloud.documentai.v1beta3.Document (a93d961)
• documentai: A new field method is added to message .google.cloud.documentai.v1beta3.DocumentSchema (a93d961)
• documentai: A new field signature_value is added to message .google.cloud.documentai.v1beta3.Document (a93d961)
• documentai: A new message EntitiesRevision is added (a93d961)
• documentai: A new message EntityValidationOutput is added (a93d961)
• documentai: Added new fields entity_validation_output, entities_revisions, and entities_revision_id to the Document message (a93d961)
• documentai: Added new messages EntityValidationOutput and EntitiesRevision (a93d961)

Documentation

• documentai: A comment for field create_time in message .google.cloud.documentai.v1beta3.Processor is changed (a93d961)
• documentai: A comment for field create_time in message .google.cloud.documentai.v1beta3.ProcessorVersion is changed (a93d961)
• documentai: A comment for field deprecation_info in message .google.cloud.documentai.v1beta3.ProcessorVersion is changed (a93d961)
• documentai: A comment for field document_schema in message .google.cloud.documentai.v1beta3.ProcessorVersion is changed (a93d961)
• documentai: A comment for field kms_key_name in message .google.cloud.documentai.v1beta3.ProcessorVersion is changed (a93d961)
• documentai: A comment for field kms_key_version_name in message .google.cloud.documentai.v1beta3.ProcessorVersion is changed (a93d961)
• documentai: A comment for field latest_evaluation in message .google.cloud.documentai.v1beta3.ProcessorVersion is changed (a93d961)
• documentai: A comment for field processor_version_source in message .google.cloud.documentai.v1beta3.ImportProcessorVersionRequest is changed (a93d961)
• documentai: A comment for field training_method in message .google.cloud.documentai.v1beta3.TrainProcessorVersionRequest is changed (a93d961)
• documentai: The field training_method in TrainProcessorVersionRequest is now marked as optional (a93d961)

1.38.1 (2025-09-16)

Bug Fixes

• documentai: Upgrade gRPC service registration func (617bb68)

... (truncated)

Commits

• 95ae207 chore(main): release pubsub 1.42.0 (#10656)
• bbd3366 feat(pubsub): add opentelemetry tracing support (#10709)
• 106174a chore(apihub): add config to generate apiv1 (#10701)
• 2b7a912 chore(main): release auth 0.9.0 (#10693)
• d0b3890 chore: update issue template (#10695)
• 48eb295 chore(main): release spanner 1.67.0 (#10657)
• bf9595e vertexai: import go-sentencepiece to internal (#10689)
• 5250a13 feat(auth): auth library can talk to S2A over mTLS (#10634)
• b02a9a1 chore: update readme about version support (#10691)
• b32cb37 feat(texttospeech): A new method StreamingSynthesize is added to service `T...
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