Add CHANGELOG entry

CHANGELOG.md

@@ -10,17 +10,17 @@
 
   ([PR #1326](https://github.com/alphagov/govuk-frontend/pull/1326))
 
-- Update form inputs to use new WCAG 2.1 compliant focus style
+- Update accordion to use new WCAG 2.1 compliant focus style
 
   To migrate: [TODO add migration instructions before we ship v3.0.0]
 
-  ([PR #1312](https://github.com/alphagov/govuk-frontend/pull/1312))
+  ([PR #1324](https://github.com/alphagov/govuk-frontend/pull/1324))
 
-- Update footer links to use new focus style
+- Update form inputs to use new WCAG 2.1 compliant focus style
 
   To migrate: [TODO add migration instructions before we ship v3.0.0]
 
-  ([PR #1321](https://github.com/alphagov/govuk-frontend/pull/1321))
+  ([PR #1312](https://github.com/alphagov/govuk-frontend/pull/1312))
 
 - Update links (and things that look like links) to use the new focus style
 
@@ -142,6 +142,10 @@
 
 🔧 Fixes:
 
+- Update accordion focus styles to remove firefox outlines
+
+  ([PR #1324](https://github.com/alphagov/govuk-frontend/pull/1324))
+
 - Rename `$govuk-border-width-mobile` to `$govuk-border-width-narrow`
 
   This better reflects how the variable is used.