chore: add cooldown to npm dependabot configuration (#10282)

- Add 15-day cooldown period to npm dependency update configurations

Author: ContentfulCormac

.github/dependabot.yml

@@ -38,6 +38,8 @@ updates:
       patterns:
         - '*'
 
+  cooldown:
+    default-days: 15
 - package-ecosystem: npm
   directory: "/apps/ai-image-tagging/lambda"
   schedule:
@@ -73,6 +75,8 @@ updates:
       patterns:
         - '*'
 
+  cooldown:
+    default-days: 15
 - package-ecosystem: npm
   directory: "/apps/slack/lambda"
   schedule:
@@ -108,6 +112,8 @@ updates:
       patterns:
         - '*'
 
+  cooldown:
+    default-days: 15
 - package-ecosystem: npm
   directory: "/apps/jira/functions"
   schedule:
@@ -143,6 +149,8 @@ updates:
       patterns:
         - '*'
 
+  cooldown:
+    default-days: 15
 - package-ecosystem: npm
   directory: "/apps/netlify/lambda"
   schedule:
@@ -178,6 +186,8 @@ updates:
       patterns:
         - '*'
 
+  cooldown:
+    default-days: 15
 - package-ecosystem: npm
   directory: "/examples/typescript"
   schedule:
@@ -213,6 +223,8 @@ updates:
       patterns:
         - '*'
 
+  cooldown:
+    default-days: 15
 - package-ecosystem: npm
   directory: "/examples/javascript"
   schedule:
@@ -248,6 +260,8 @@ updates:
       patterns:
         - '*'
 
+  cooldown:
+    default-days: 15
 - package-ecosystem: npm
   directory: "/examples/function-mock-shop"
   schedule:
@@ -283,6 +297,8 @@ updates:
       patterns:
         - '*'
 
+  cooldown:
+    default-days: 15
 - package-ecosystem: npm
   directory: "/examples/function-potterdb"
   schedule:
@@ -318,6 +334,8 @@ updates:
       patterns:
         - '*'
 
+  cooldown:
+    default-days: 15
 - package-ecosystem: npm
   directory: "/examples/function-potterdb-rest-api"
   schedule:
@@ -353,6 +371,8 @@ updates:
       patterns:
         - '*'
 
+  cooldown:
+    default-days: 15
 - package-ecosystem: docker
   directory: "/apps/slack/lambda/"
   schedule: