wip: fetch v5*

Author: toshimaru

.github/workflows/ci.yml

@@ -36,7 +36,8 @@ jobs:
     - uses: actions/checkout@v3
       with:
         submodules: true
-    - run: cd rails && git fetch --depth=1 origin refs/tags/v7*:refs/tags/v7* refs/tags/v6*:refs/tags/v6*
+    - name: fetch Rails tags
+      run: cd rails && git fetch --depth=1 origin refs/tags/v7*:refs/tags/v7* refs/tags/v6*:refs/tags/v6* refs/tags/v5*:refs/tags/v5* 
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: 2.7