rebase: bump go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc

Bumps [go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc](https://github.com/open-telemetry/opentelemetry-go-contrib) from 0.35.0 to 0.46.0.
- [Release notes](https://github.com/open-telemetry/opentelemetry-go-contrib/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-go-contrib/blob/main/CHANGELOG.md)
- [Commits](https://github.com/open-telemetry/opentelemetry-go-contrib/compare/zpages/v0.35.0...zpages/v0.46.0)

---
updated-dependencies:
- dependency-name: go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/go.opentelemetry.io/otel/metric/syncfloat64.go

@@ -147,8 +147,9 @@ type Float64Histogram interface {
 // Float64HistogramConfig contains options for synchronous counter instruments
 // that record int64 values.
 type Float64HistogramConfig struct {
-	description string
-	unit        string
+	description              string
+	unit                     string
+	explicitBucketBoundaries []float64
 }
 
 // NewFloat64HistogramConfig returns a new [Float64HistogramConfig] with all
@@ -171,6 +172,11 @@ func (c Float64HistogramConfig) Unit() string {
 	return c.unit
 }
 
+// ExplicitBucketBoundaries returns the configured explicit bucket boundaries.
+func (c Float64HistogramConfig) ExplicitBucketBoundaries() []float64 {
+	return c.explicitBucketBoundaries
+}
+
 // Float64HistogramOption applies options to a [Float64HistogramConfig]. See
 // [InstrumentOption] for other options that can be used as a
 // Float64HistogramOption.