replace parser with actions/workflow-parser

vendor/github.com/actions/workflow-parser/parser/opts.go

@@ -0,0 +1,15 @@
+package parser
+
+type OptionFunc func(*parseState)
+
+func WithSuppressWarnings() OptionFunc {
+	return func(ps *parseState) {
+		ps.suppressSeverity = WARNING
+	}
+}
+
+func WithSuppressErrors() OptionFunc {
+	return func(ps *parseState) {
+		ps.suppressSeverity = ERROR
+	}
+}