Update dependencies (#5518)

vendor/google.golang.org/grpc/internal/resolver/dns/dns_resolver.go

@@ -140,10 +140,10 @@ func (b *dnsBuilder) Build(target resolver.Target, cc resolver.ClientConn, opts
 		disableServiceConfig: opts.DisableServiceConfig,
 	}
 
-	if target.Authority == "" {
+	if target.URL.Host == "" {
 		d.resolver = defaultResolver
 	} else {
-		d.resolver, err = customAuthorityResolver(target.Authority)
+		d.resolver, err = customAuthorityResolver(target.URL.Host)
 		if err != nil {
 			return nil, err
 		}

vendor/google.golang.org/grpc/internal/resolver/passthrough/passthrough.go

@@ -20,13 +20,20 @@
 // name without scheme back to gRPC as resolved address.
 package passthrough
 
-import "google.golang.org/grpc/resolver"
+import (
+	"errors"
+
+	"google.golang.org/grpc/resolver"
+)
 
 const scheme = "passthrough"
 
 type passthroughBuilder struct{}
 
 func (*passthroughBuilder) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOptions) (resolver.Resolver, error) {
+	if target.Endpoint == "" && opts.Dialer == nil {
+		return nil, errors.New("passthrough: received empty target in Build()")
+	}
 	r := &passthroughResolver{
 		target: target,
 		cc:     cc,

vendor/google.golang.org/grpc/internal/resolver/unix/unix.go

@@ -34,8 +34,8 @@ type builder struct {
 }
 
 func (b *builder) Build(target resolver.Target, cc resolver.ClientConn, _ resolver.BuildOptions) (resolver.Resolver, error) {
-	if target.Authority != "" {
-		return nil, fmt.Errorf("invalid (non-empty) authority: %v", target.Authority)
+	if target.URL.Host != "" {
+		return nil, fmt.Errorf("invalid (non-empty) authority: %v", target.URL.Host)
 	}
 
 	// gRPC was parsing the dial target manually before PR #4817, and we
@@ -49,8 +49,9 @@ func (b *builder) Build(target resolver.Target, cc resolver.ClientConn, _ resolv
 	}
 	addr := resolver.Address{Addr: endpoint}
 	if b.scheme == unixAbstractScheme {
-		// prepend "\x00" to address for unix-abstract
-		addr.Addr = "\x00" + addr.Addr
+		// We can not prepend \0 as c++ gRPC does, as in Golang '@' is used to signify we do
+		// not want trailing \0 in address.
+		addr.Addr = "@" + addr.Addr
 	}
 	cc.UpdateState(resolver.State{Addresses: []resolver.Address{networktype.Set(addr, "unix")}})
 	return &nopResolver{}, nil