Update dependabot

Signed-off-by: Simon Davies <[email protected]>

Author: simongdavies

.github/dependabot.yml

@@ -4,3 +4,7 @@ updates:
     directory: "/"
     schedule:
       interval: "daily"
+  - package-ecosystem: "cargo"
+    directory: "/"
+    schedule:
+      interval: "daily"