Add waiting label.

.github/labels.yml

@@ -30,7 +30,7 @@
   color: a2eeef
 - name: github_actions
   description: Pull requests that update Github_actions code
-  color: "000000"
+  color: '000000'
 - name: good first issue
   description: Good for newcomers
   color: 7057ff
@@ -42,7 +42,7 @@
   color: e4e669
 - name: performance
   description: Performance
-  color: "016175"
+  color: '016175'
 - name: python
   description: Pull requests that update Python code
   color: 2b67c6
@@ -67,3 +67,6 @@
 - name: votes needed
   description: Vote for this feature to encourage prioritization!
   color: e2ed82
+- name: waiting
+  description: Waiting for something
+  color: daa036