Auto merge of #115940 - matthiaskrgr:rollup-5ps9ln1, r=matthiaskrgr

Rollup of 6 pull requests

Successful merges:

 - #109409 (Add `minmax{,_by,_by_key}` functions to `core::cmp`)
 - #115494 (get rid of duplicate primitive_docs)
 - #115663 (ci: actions/checkout@v3 to actions/checkout@v4)
 - #115762 (Explain revealing of opaque types in layout_of ParamEnv)
 - #115891 (simplify inject_impl_of_structural_trait)
 - #115932 (Expand infra-ci reviewer list)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors