Add label sponsor

.github/labels.yml

@@ -47,26 +47,34 @@
   name: ":pray: help wanted"
   color: "4caf50"
   description: ""
-- # hold
-  name: ":hand: hold"
-  color: "24292f"
-  description: ""
 - # invalid
   name: ":no_entry_sign: invalid"
   color: "e6e6e6"
   description: ""
-- # maybe bug
-  name: ":interrobang: maybe bug"
-  color: "ff5722"
+- # investigate
+  name: ":mag: investigate"
+  color: "e6625b"
   description: ""
 - # needs more info
   name: ":thinking: needs more info"
   color: "795548"
   description: ""
+- # pinned
+  name: ":pushpin: pinned"
+  color: "28008e"
+  description: ""
 - # question
   name: ":question: question"
   color: "3f51b5"
   description: ""
+- # sponsor
+  name: ":sparkling_heart: sponsor"
+  color: "fedbf0"
+  description: ""
+- # stale
+  name: ":skull: stale"
+  color: "237da0"
+  description: ""
 - # upstream
   name: ":eyes: upstream"
   color: "fbca04"