gem-test.yml in dvla-lint-1.8.0

- old
+ new

@@ -7,10 +7,10 @@
 jobs:
   test:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: [ '3.0', '3.1', '3.2' ]
+        ruby-version: [ '3.0', '3.1', '3.2', '3.3' ]
 
     steps:
       - uses: actions/checkout@v2
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
\ No newline at end of file