Replace Ruby 3.3.0 with 3.3.1 in test matrix

Ruby 3.3.0 introduced a regression [Bug #20090](https://bugs.ruby-lang.org/issues/20090) that incorrectly flags
anonymous parameter forwarding in blocks as a syntax error, even in
unambiguous cases. This breaks Rails 8.1's `ActionView::CaptureHelper`
which uses `yield(*, **)` inside a block.

The bug was fixed and backported to Ruby 3.3.1, making it safe to use
Rails 8.1 with Ruby 3.3.1+.

Author: omarluq

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: [3.2.0, 3.3.0]
+        ruby-version: [3.2.0, 3.3.1]
         appraisal: ["rails_7.2", "rails_8.0", "rails_8.1"]
     steps:
       - uses: actions/checkout@v4