vendor: update buildkit to v0.17.0-rc2

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

vendor/google.golang.org/protobuf/runtime/protoiface/methods.go

@@ -39,6 +39,9 @@ type Methods = struct {
 
 	// CheckInitialized returns an error if any required fields in the message are not set.
 	CheckInitialized func(CheckInitializedInput) (CheckInitializedOutput, error)
+
+	// Equal compares two messages and returns EqualOutput.Equal == true if they are equal.
+	Equal func(EqualInput) EqualOutput
 }
 
 // SupportFlags indicate support for optional features.
@@ -166,3 +169,18 @@ type CheckInitializedInput = struct {
 type CheckInitializedOutput = struct {
 	pragma.NoUnkeyedLiterals
 }
+
+// EqualInput is input to the Equal method.
+type EqualInput = struct {
+	pragma.NoUnkeyedLiterals
+
+	MessageA protoreflect.Message
+	MessageB protoreflect.Message
+}
+
+// EqualOutput is output from the Equal method.
+type EqualOutput = struct {
+	pragma.NoUnkeyedLiterals
+
+	Equal bool
+}