Add cooldowns to non-data Dependabot updates (#3575)

Author: ddbeck

.github/dependabot.yml

@@ -9,6 +9,13 @@ updates:
       - gh-pages
     schedule:
       interval: daily
+    cooldown:
+      default-days: 7
+      exclude:
+        # Data packages are excluded from cooldowns, since we want those more urgently
+        - "@mdn/browser-compat-data"
+        - "caniuse-lite"
+        - "web-specs"
     ignore:
       - dependency-name: "@types/node"
         update-types: ["version-update:semver-major"]