This reverts commit be8c41d56e.
```
+ git push origin refs/heads/v2
To https://github.com/taiki-e/install-action
! [rejected] v2 -> v2 (non-fast-forward)
error: failed to push some refs to 'https://github.com/taiki-e/install-action'
hint: Updates were rejected because the tip of your current branch is behind
hint: its remote counterpart. Integrate the remote changes (e.g.
hint: 'git pull ...') before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.
```
