chore: set dependabot cooldown to 3 days (#340)

update indentation and add missing section from last PR sorry

contributes to CONN-438

Author: nord-erik

.github/dependabot.yml

@@ -1,13 +1,15 @@
 version: 2
 updates:
-- package-ecosystem: maven
-  directory: "/"
-  schedule:
-    interval: daily
-  cooldown:
-    default-days: 3
-  open-pull-requests-limit: 10
-- package-ecosystem: "github-actions"
-  directory: "/"
-  schedule:
-    interval: daily
+  - package-ecosystem: maven
+    directory: "/"
+    schedule:
+      interval: daily
+    cooldown:
+      default-days: 3
+    open-pull-requests-limit: 10
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: daily
+    cooldown:
+      default-days: 3