fix(deps): update module cloud.google.com/go/bigtable to v1.50.0

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Confidence
cloud.google.com/go/bigtable	v1.38.0 → v1.50.0

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[forking-renovate]

ℹ️ Artifact update notice

File name: go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

• 30 additional dependencies were updated

Details:

Package	Change
golang.org/x/oauth2	v0.34.0 -> v0.36.0
golang.org/x/sys	v0.40.0 -> v0.45.0
google.golang.org/api	v0.237.0 -> v0.283.0
google.golang.org/grpc	v1.79.3 -> v1.81.1
google.golang.org/protobuf	v1.36.10 -> v1.36.11
cloud.google.com/go	v0.121.2 -> v0.123.0
cloud.google.com/go/iam	v1.5.2 -> v1.11.0
cloud.google.com/go/longrunning	v0.6.7 -> v1.0.0
github.com/cncf/xds/go	v0.0.0-20251210132809-ee656c7534f5 -> v0.0.0-20260202195803-dba9d589def2
github.com/envoyproxy/protoc-gen-validate	v1.3.0 -> v1.3.3
github.com/googleapis/enterprise-certificate-proxy	v0.3.6 -> v0.3.16
github.com/googleapis/gax-go/v2	v2.14.2 -> v2.22.0
golang.org/x/net	v0.48.0 -> v0.55.0
golang.org/x/text	v0.32.0 -> v0.37.0
google.golang.org/genproto	v0.0.0-20250505200425-f936aa4a68b2 -> v0.0.0-20260519071638-aa98bba5eb94
cloud.google.com/go/auth	v0.16.2 -> v0.20.0
cloud.google.com/go/monitoring	v1.24.2 -> v1.29.0
github.com/envoyproxy/go-control-plane/envoy	v1.36.0 -> v1.37.0
go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc	v0.61.0 -> v0.68.0
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp	v0.61.0 -> v0.67.0
go.opentelemetry.io/otel	v1.40.0 -> v1.44.0
go.opentelemetry.io/otel/metric	v1.40.0 -> v1.44.0
go.opentelemetry.io/otel/sdk	v1.40.0 -> v1.44.0
go.opentelemetry.io/otel/sdk/metric	v1.40.0 -> v1.44.0
go.opentelemetry.io/otel/trace	v1.40.0 -> v1.44.0
golang.org/x/crypto	v0.46.0 -> v0.51.0
golang.org/x/sync	v0.19.0 -> v0.20.0
golang.org/x/time	v0.12.0 -> v0.15.0
google.golang.org/genproto/googleapis/api	v0.0.0-20251202230838-ff82c1b0f217 -> v0.0.0-20260526163538-3dc84a4a5aaa
google.golang.org/genproto/googleapis/rpc	v0.0.0-20251202230838-ff82c1b0f217 -> v0.0.0-20260526163538-3dc84a4a5aaa