ci: install risedev to ci image

[xxchan]

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What's changed and what's your intention?

Checklist

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have added test labels as necessary. See details.
• I have added fuzzing tests or opened an issue to track them. (Optional, recommended for new SQL features Sqlsmith: Sql feature generation #7934).
• My PR contains breaking changes. (If it deprecates some features, please create a tracking issue to remove them in the future).
• All checks passed in ./risedev check (or alias, ./risedev c)
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[BugenZhao]

What about ./risedevs?

[kwannoel]

This breaks some tests from running locally, since risedev may not be installed globally.

Minor issue I guess... can just add risedev to path locally.

[BugenZhao]

This breaks some tests from running locally, since risedev may not be installed globally.

TBH I would expect the bash script to be a thin wrapper if possible, so that there's no such need to run "ci" script locally. I think #16244 (or #12451) is for this purpose. However we can install it to the path anyhow as a workaround for now. 🤣