Auto merge of #63790 - Centril:rollup-m4ax3r9, r=Centril

Rollup of 6 pull requests

Successful merges:

 - #61236 (take into account the system theme)
 - #63717 (Fix nested eager expansions in arguments of `format_args`)
 - #63747 (update Miri)
 - #63772 (ci: move libc mirrors to the rust-lang-ci-mirrors bucket)
 - #63780 (Improve diagnostics: break/continue in wrong context)
 - #63781 (Run Clippy without json-rendered flag)

Failed merges:

r? @ghost