Fix dependabot labels

Author: colinodell

.github/dependabot.yml

@@ -6,17 +6,24 @@ updates:
       interval: "daily"
     assignees:
       - "colinodell"
+    labels:
+      - "documentation"
+      - "dependencies"
 
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
       interval: "daily"
     assignees:
       - "colinodell"
+    labels:
+      - "dependencies"
 
   - package-ecosystem: "composer"
     directory: "/"
     schedule:
       interval: "daily"
     assignees:
       - "colinodell"
+    labels:
+      - "dependencies"