update github.com/compose-spec/compose-go to v1.2.1

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>
(cherry picked from commit 785dc17f13)

vendor/github.com/compose-spec/compose-go/consts/consts.go

@@ -0,0 +1,23 @@
+/*
+   Copyright 2020 The Compose Specification Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package consts
+
+const (
+	ComposeProjectName   = "COMPOSE_PROJECT_NAME"
+	ComposePathSeparator = "COMPOSE_PATH_SEPARATOR"
+	ComposeFilePath      = "COMPOSE_FILE"
+)