Updates to ruby/setup-ruby to always use latest v1 in Github CI (#419…

…69, #30069).

Patch by Katsuya HIDAKA (user:hidakatsuya).

git-svn-id: https://svn.redmine.org/redmine/trunk@23400 e93f8b46-1217-0410-a6f0-8f06a7374b81

.github/workflows/tests.yml

@@ -82,7 +82,7 @@ jobs:
           EOF
 
       - name: Install Ruby and gems
-        uses: ruby/setup-ruby@v1.176.0
+        uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true