glab release create requires -notes even on update
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### Checklist
<!-- Please test the latest versions, that will remove the possibility that you see a bug that is fixed in a newer version. -->
- [x] I'm using the latest version of the extension (Run `glab --version`) v1.87.0
- Extension version: _Put your extension version here_
- [x] Operating system and version: registry.gitlab.com/gitlab-org/cli:1.87.0
- [x] Gitlab.com or self-managed instance? gitlab.com
- [ ] GitLab version (if self-managed) _GitLab version here_
(Use the `version` endpoint, like this: gitlab.my-company.com/api/v4/version)
- [ ] I have performed `glab auth status` to check for authentication issues
- [ ] Run the command in debug mode (like `DEBUG=true glab mr list`) and attach any useful output
### Summary
When using `glab release create` to update update an existing release it asks for -notes. I can see why it's required when creating, but not when updating.
### Environment
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- SHELL: Your shell (bash, fish, zsh, ...)
- TERM: Your terminal emulator (Kitty, Xterm2..)
- GLAB: result of running `glab --version` (glab version 1.32.0 (2023-08-18))
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- OS:
- SHELL:
- TERM:
- GLAB:
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### Steps to reproduce
Just do `glab release create` on an existing release to update the --release-at field
### What is the current _bug_ behavior?
It's asking for --notes
### What is the expected _correct_ behavior?
It should succeed, the release already has notes
### Relevant logs and/or screenshots
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### Possible fixes
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issue