Revert "update OpenTelemetry dependencies"

This reverts commit 82e9ce79c7.

vendor/google.golang.org/grpc/encoding/proto/proto.go

@@ -23,9 +23,8 @@ package proto
 import (
 	"fmt"
 
+	"github.com/golang/protobuf/proto"
 	"google.golang.org/grpc/encoding"
-	"google.golang.org/protobuf/proto"
-	"google.golang.org/protobuf/protoadapt"
 )
 
 // Name is the name registered for the proto compressor.
@@ -39,34 +38,21 @@ func init() {
 type codec struct{}
 
 func (codec) Marshal(v any) ([]byte, error) {
-	vv := messageV2Of(v)
-	if vv == nil {
+	vv, ok := v.(proto.Message)
+	if !ok {
 		return nil, fmt.Errorf("failed to marshal, message is %T, want proto.Message", v)
 	}
-
 	return proto.Marshal(vv)
 }
 
 func (codec) Unmarshal(data []byte, v any) error {
-	vv := messageV2Of(v)
-	if vv == nil {
+	vv, ok := v.(proto.Message)
+	if !ok {
 		return fmt.Errorf("failed to unmarshal, message is %T, want proto.Message", v)
 	}
-
 	return proto.Unmarshal(data, vv)
 }
 
-func messageV2Of(v any) proto.Message {
-	switch v := v.(type) {
-	case protoadapt.MessageV1:
-		return protoadapt.MessageV2Of(v)
-	case protoadapt.MessageV2:
-		return v
-	}
-
-	return nil
-}
-
 func (codec) Name() string {
 	return Name
 }