`manual_inspect`: fix `clippy::version` from 1.78.0 to 1.81.0 Although `manual_inspect`'s PR started some months ago, the lint is only available in the current nightly (1.81.0), rather than 1.78.0. ``` changelog: [`manual_inspect`]: fix `clippy::version` from 1.78.0 to 1.81.0 ```