Add custom labels to dependabot PRs

Signed-off-by: Simon Davies <simongdavies@users.noreply.github.com>

Author: simongdavies

.github/dependabot.yml

@@ -5,14 +5,20 @@ updates:
     schedule:
       interval: "daily"
       time: "03:00"
+    labels:
+      - "kind/dependencies"
   - package-ecosystem: "cargo"
     directories: 
       - "/"
     schedule:
       interval: "daily"
       time: "03:00"
+    labels:
+      - "kind/dependencies"
   - package-ecosystem: "npm"
     directory: "/src/js-host-api"
     schedule:
       interval: "daily"
-      time: "03:00"
+      time: "03:00"
+    labels:
+      - "kind/dependencies"