Update vendor yaegashi/msgraph.go to v0.1.2 (2)

vendor/github.com/yaegashi/msgraph.go/beta/ModelMentions.go

@@ -0,0 +1,11 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// MentionsPreview undocumented
+type MentionsPreview struct {
+	// Object is the base model of MentionsPreview
+	Object
+	// IsMentioned undocumented
+	IsMentioned *bool `json:"isMentioned,omitempty"`
+}