Auto merge of #135592 - matthiaskrgr:rollup-4t69l7i, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - #134754 (Implement `use` associated items of traits)
 - #135481 (coverage: Completely overhaul counter assignment, using node-flow graphs)
 - #135504 (Allow coercing safe-to-call target_feature functions to safe fn pointers)
 - #135561 (Update docs for `-Clink-dead-code` to discourage its use)
 - #135574 (ci: mirror ubuntu:22.04 to ghcr.io)
 - #135585 (resolve symlinks of LLVM tool binaries before copying them)
 - #135588 (Add license-metadata.json to rustc-src tarball.)

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