Fix optional excise attribute

.github/workflows/main.yml

@@ -13,7 +13,7 @@ jobs:
       matrix:
         ruby:
           - "3.4"
-          - "4.0"
+          - "4.0.6"
 
     steps:
     - uses: actions/checkout@v4
@@ -35,7 +35,7 @@ jobs:
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 4.0
+        ruby-version: 4.0.6
         bundler-cache: true
     - name: Set up Chrome
       uses: browser-actions/setup-chrome@v1