fix(deps): update all opentelemetry-go-contrib packages to v0.56.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc	v0.55.0 -> v0.56.0
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp	v0.55.0 -> v0.56.0

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[renovate]

ℹ Artifact update notice

File name: examples/demo/client/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):

• 3 additional dependencies were updated

Details:

Package	Change
go.opentelemetry.io/otel	v1.30.0 -> v1.31.0
go.opentelemetry.io/otel/metric	v1.30.0 -> v1.31.0
go.opentelemetry.io/otel/trace	v1.30.0 -> v1.31.0

File name: examples/demo/server/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):

• 3 additional dependencies were updated

Details:

Package	Change
go.opentelemetry.io/otel	v1.30.0 -> v1.31.0
go.opentelemetry.io/otel/metric	v1.30.0 -> v1.31.0
go.opentelemetry.io/otel/trace	v1.30.0 -> v1.31.0

File name: receiver/opencensusreceiver/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):

• 6 additional dependencies were updated

Details:

Package	Change
go.opentelemetry.io/otel	v1.30.0 -> v1.31.0
go.opentelemetry.io/otel/trace	v1.30.0 -> v1.31.0
go.opentelemetry.io/otel/metric	v1.30.0 -> v1.31.0
golang.org/x/net	v0.29.0 -> v0.30.0
golang.org/x/sys	v0.25.0 -> v0.26.0
google.golang.org/genproto/googleapis/rpc	v0.0.0-20240903143218-8af14fe29dc1 -> v0.0.0-20241007155032-5fefd90f89a9