ci: set 3-day cooldown for Dependabot updates (#369)

* ci: set 3-day cooldown for Dependabot updates

* ci: fix Dependabot format group typo

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: MattIPv4

.github/dependabot.yml

@@ -10,6 +10,8 @@ updates:
       interval: monthly
     commit-message:
       prefix: meta
+    cooldown:
+      default-days: 3
     open-pull-requests-limit: 10
   - package-ecosystem: npm
     directory: '/'
@@ -18,8 +20,10 @@ updates:
       interval: monthly
     commit-message:
       prefix: meta
+    cooldown:
+      default-days: 3
     groups:
-      fromat:
+      format:
         patterns:
           - 'prettier'
       lint: