rebase: bump google.golang.org/grpc from 1.40.0 to 1.41.0

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.40.0 to 1.41.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.40.0...v1.41.0)

---
updated-dependencies:
- dependency-name: google.golang.org/grpc
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

vendor/google.golang.org/grpc/internal/serviceconfig/serviceconfig.go

@@ -78,6 +78,7 @@ func (bc *BalancerConfig) UnmarshalJSON(b []byte) error {
 		return err
 	}
 
+	var names []string
 	for i, lbcfg := range ir {
 		if len(lbcfg) != 1 {
 			return fmt.Errorf("invalid loadBalancingConfig: entry %v does not contain exactly 1 policy/config pair: %q", i, lbcfg)
@@ -92,6 +93,7 @@ func (bc *BalancerConfig) UnmarshalJSON(b []byte) error {
 		for name, jsonCfg = range lbcfg {
 		}
 
+		names = append(names, name)
 		builder := balancer.Get(name)
 		if builder == nil {
 			// If the balancer is not registered, move on to the next config.
@@ -120,7 +122,7 @@ func (bc *BalancerConfig) UnmarshalJSON(b []byte) error {
 	// return. This means we had a loadBalancingConfig slice but did not
 	// encounter a registered policy. The config is considered invalid in this
 	// case.
-	return fmt.Errorf("invalid loadBalancingConfig: no supported policies found")
+	return fmt.Errorf("invalid loadBalancingConfig: no supported policies found in %v", names)
 }
 
 // MethodConfig defines the configuration recommended by the service providers for a