Update softprops/action-gh-release action to v2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
softprops/action-gh-release	action	major	v1 -> v2

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Warning

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Release Notes

softprops/action-gh-release (softprops/action-gh-release)

v2

Compare Source

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Configuration

📅 Schedule: Branch creation - "before 4am on Monday" in timezone Asia/Tokyo, Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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[torikizi]

renovate は廃止のためこちらは一旦クローズし、対応は別に行います。