Switch to weekly Dependabot cadence

Author: desrosj

.github/dependabot.yml

@@ -6,7 +6,7 @@ updates:
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      interval: "daily"
+      interval: "weekly"
     open-pull-requests-limit: 10
     groups:
       github-actions:
@@ -17,7 +17,7 @@ updates:
   - package-ecosystem: "composer"
     directory: "/"
     schedule:
-      interval: "daily"
+      interval: "weekly"
     open-pull-requests-limit: 10
     ignore:
       # These dependencies do not currently need to be managed with Dependabot.
@@ -26,15 +26,15 @@ updates:
       - dependency-name: "phpcompatibility/php-compatibility"
       - dependency-name: "yoast/phpunit-polyfills"
     groups:
-      composer-packages:
+      composer-weekly:
         patterns:
           - "composer/ca-bundle"
 
   # Monitor some npm dependencies for updates in groups.
   - package-ecosystem: "npm"
     directory: "/"
     schedule:
-      interval: "daily"
+      interval: "weekly"
     open-pull-requests-limit: 20
     ignore:
       - dependency-name: "@wordpress/*"