protobuf: remove gogoproto

Removes gogo/protobuf from buildx and updates to a version of
moby/buildkit where gogo is removed.

This also changes how the proto files are generated. This is because
newer versions of protobuf are more strict about name conflicts. If two
files have the same name (even if they are relative paths) and are used
in different protoc commands, they'll conflict in the registry.

Since protobuf file generation doesn't work very well with
`paths=source_relative`, this removes the `go:generate` expression and
just relies on the dockerfile to perform the generation.

Signed-off-by: Jonathan A. Sternberg <jonathan.sternberg@docker.com>

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

@@ -106,6 +106,14 @@ var (
 	// This is used in the 1.0 release of gcp/observability, and thus must not be
 	// deleted or changed.
 	ClearGlobalDialOptions func()
+
+	// AddGlobalPerTargetDialOptions adds a PerTargetDialOption that will be
+	// configured for newly created ClientConns.
+	AddGlobalPerTargetDialOptions any // func (opt any)
+	// ClearGlobalPerTargetDialOptions clears the slice of global late apply
+	// dial options.
+	ClearGlobalPerTargetDialOptions func()
+
 	// JoinDialOptions combines the dial options passed as arguments into a
 	// single dial option.
 	JoinDialOptions any // func(...grpc.DialOption) grpc.DialOption
@@ -126,7 +134,8 @@ var (
 	// deleted or changed.
 	BinaryLogger any // func(binarylog.Logger) grpc.ServerOption
 
-	// SubscribeToConnectivityStateChanges adds a grpcsync.Subscriber to a provided grpc.ClientConn
+	// SubscribeToConnectivityStateChanges adds a grpcsync.Subscriber to a
+	// provided grpc.ClientConn.
 	SubscribeToConnectivityStateChanges any // func(*grpc.ClientConn, grpcsync.Subscriber)
 
 	// NewXDSResolverWithConfigForTesting creates a new xds resolver builder using
@@ -184,21 +193,45 @@ var (
 
 	ChannelzTurnOffForTesting func()
 
-	// TriggerXDSResourceNameNotFoundForTesting triggers the resource-not-found
-	// error for a given resource type and name. This is usually triggered when
-	// the associated watch timer fires. For testing purposes, having this
-	// function makes events more predictable than relying on timer events.
-	TriggerXDSResourceNameNotFoundForTesting any // func(func(xdsresource.Type, string), string, string) error
+	// TriggerXDSResourceNotFoundForTesting causes the provided xDS Client to
+	// invoke resource-not-found error for the given resource type and name.
+	TriggerXDSResourceNotFoundForTesting any // func(xdsclient.XDSClient, xdsresource.Type, string) error
 
-	// TriggerXDSResourceNotFoundClient invokes the testing xDS Client singleton
-	// to invoke resource not found for a resource type name and resource name.
-	TriggerXDSResourceNameNotFoundClient any // func(string, string) error
-
-	// FromOutgoingContextRaw returns the un-merged, intermediary contents of metadata.rawMD.
+	// FromOutgoingContextRaw returns the un-merged, intermediary contents of
+	// metadata.rawMD.
 	FromOutgoingContextRaw any // func(context.Context) (metadata.MD, [][]string, bool)
+
+	// UserSetDefaultScheme is set to true if the user has overridden the
+	// default resolver scheme.
+	UserSetDefaultScheme bool = false
+
+	// ShuffleAddressListForTesting pseudo-randomizes the order of addresses.  n
+	// is the number of elements.  swap swaps the elements with indexes i and j.
+	ShuffleAddressListForTesting any // func(n int, swap func(i, j int))
+
+	// ConnectedAddress returns the connected address for a SubConnState. The
+	// address is only valid if the state is READY.
+	ConnectedAddress any // func (scs SubConnState) resolver.Address
+
+	// SetConnectedAddress sets the connected address for a SubConnState.
+	SetConnectedAddress any // func(scs *SubConnState, addr resolver.Address)
+
+	// SnapshotMetricRegistryForTesting snapshots the global data of the metric
+	// registry. Returns a cleanup function that sets the metric registry to its
+	// original state. Only called in testing functions.
+	SnapshotMetricRegistryForTesting func() func()
+
+	// SetDefaultBufferPoolForTesting updates the default buffer pool, for
+	// testing purposes.
+	SetDefaultBufferPoolForTesting any // func(mem.BufferPool)
+
+	// SetBufferPoolingThresholdForTesting updates the buffer pooling threshold, for
+	// testing purposes.
+	SetBufferPoolingThresholdForTesting any // func(int)
 )
 
-// HealthChecker defines the signature of the client-side LB channel health checking function.
+// HealthChecker defines the signature of the client-side LB channel health
+// checking function.
 //
 // The implementation is expected to create a health checking RPC stream by
 // calling newStream(), watch for the health status of serviceName, and report