Switch Dependadot to monthly update schedule (badges#11351)

Author: PyvesB

.github/dependabot.yml

@@ -4,7 +4,7 @@ updates:
   - package-ecosystem: npm
     directory: '/'
     schedule:
-      interval: weekly
+      interval: monthly
       day: friday
       time: '12:00'
     open-pull-requests-limit: 99
@@ -16,6 +16,8 @@ updates:
       # https://caniuse.com/js-regexp-lookbehind
       - dependency-name: 'decamelize'
       - dependency-name: 'humanize-string'
+      # simple-icons is handled by separate weekly schedule below
+      - dependency-name: 'simple-icons'
     groups:
       # All official @docusaurus/* packages should have the exact same version as @docusaurus/core.
       # From https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#groups:
@@ -30,11 +32,24 @@ updates:
         applies-to: security-updates
         patterns:
           - '@docusaurus/*'
+
+  # simple-icons package - weekly updates
+  - package-ecosystem: npm
+    directory: '/'
+    schedule:
+      interval: weekly
+      day: friday
+      time: '12:00'
+    allow:
+      - dependency-name: 'simple-icons'
+    open-pull-requests-limit: 99
+    rebase-strategy: disabled
+
   # badge-maker package dependencies
   - package-ecosystem: npm
     directory: '/badge-maker'
     schedule:
-      interval: weekly
+      interval: monthly
       day: friday
       time: '12:00'
     open-pull-requests-limit: 99
@@ -52,15 +67,15 @@ updates:
       - '/.github/actions/service-tests'
       - '/.github/actions/setup'
     schedule:
-      interval: weekly
+      interval: monthly
     open-pull-requests-limit: 99
     rebase-strategy: disabled
 
     # docusaurus-swizzled-warning package dependencies
   - package-ecosystem: npm
     directory: '/.github/actions/docusaurus-swizzled-warning'
     schedule:
-      interval: weekly
+      interval: monthly
       day: friday
       time: '12:00'
     open-pull-requests-limit: 99