protobuf 27.2

[moonfruit]

Created with brew bump-formula-pr.

[branchv]

mosh failed on 14 and alsoknot test failed

removing https://github.com/Homebrew/homebrew-core/labels/no%20long%20build%20conflict so we can merge #174700

[chenrui333]

• mosh, https://github.com/mobile-shell/mosh/issues/1326
• knot, flaky test failure

[github-actions[bot]]

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