Pin to puppeteer@18 using Dependabot

Recent axe update can’t use `puppeteer@19` yet ``` npm ERR! Could not resolve dependency: npm ERR! peer puppeteer@">=1.10.0 <= 18" from @axe-core/puppeteer@4.5.2 ```
alphagov · Jan 13, 2023 · 83e3ae7 · 83e3ae7
1 parent a0f6ed1
commit 83e3ae7
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
@@ -15,6 +15,10 @@ updates:
       - dependency-type: direct
 
     ignore:
+      # Ignore major updates (@axe-core/puppeteer peer puppeteer <= 18)
+      - dependency-name: puppeteer
+        update-types: ['version-update:semver-major']
+
       # Ignore major/minor updates (Marked parser changes output)
       - dependency-name: jstransformer-marked
         update-types: ['version-update:semver-major', 'version-update:semver-minor']