river 0.2.0 (new formula)

[Fexiven]

• Have you followed the guidelines for contributing?
• Have you ensured that your commits follow the commit style guide?
• Have you checked that there aren't other open pull requests for the same formula update/change?
• Have you built your formula locally with HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
• Is your test running fine brew test <formula>, where <formula> is the name of the formula you're submitting?
• Does your build pass brew audit --strict <formula> (after doing HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>)? If this is a new formula, does it pass brew audit --new <formula>?

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[github-actions]

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[chenrui333]

@Fexiven can you squash the commits and also add the formula into autobump.txt? thanks!

[chenrui333]

@Fexiven thanks for your first contribution to homebrew-core!! 🎉 🥇

[github-actions]

@chenrui333 has requested bottles to be published to this PR.