Remove 3.0 testing

Don't test on Ruby 3.0 as it's being deprecated in 4 months

Signed-off-by: Dan Webb <[email protected]>

.github/workflows/lint-unit.yml

@@ -66,7 +66,7 @@ jobs:
       BUNDLE_WITHOUT: ${{ inputs.bundle_without }}
     strategy:
       matrix:
-        ruby: ["3.0", "3.1", "3.2"]
+        ruby: ["3.1", "3.2"]
     steps:
       - name: Checkout code
         uses: actions/checkout@v4