Add job summary links to post-merge report

This should make it much easier to investigate the individual job test/duration changes.

The GitHub API handling is a bit crude, but I didn't want to include octocrab, because it more than doubles the current number of dependencies of `citool`...

Can be tested with:
```bash
$ cargo run --manifest-path src/ci/citool/Cargo.toml post-merge-report bad13a9 1e008dd
```

r? `@marcoieni`

…errors

Rollup of 19 pull requests

Successful merges:

 - rust-lang#138676 (Implement overflow for infinite implied lifetime bounds)
 - rust-lang#139024 (Make error message for missing fields with `..` and without `..` more consistent)
 - rust-lang#139098 (Tell LLVM about impossible niche tags)
 - rust-lang#139124 (compiler: report error when trait object type param reference self)
 - rust-lang#139321 (Update to new rinja version (askama))
 - rust-lang#139346 (Don't construct preds w escaping bound vars in `diagnostic_hir_wf_check`)
 - rust-lang#139386 (make it possible to use stage0 libtest on compiletest)
 - rust-lang#139421 (Fix trait upcasting to dyn type with no principal when there are projections)
 - rust-lang#139468 (Don't call `Span::with_parent` on the good path in `has_stashed_diagnostic`)
 - rust-lang#139476 (rm `RegionInferenceContext::var_infos`)
 - rust-lang#139481 (Add job summary links to post-merge report)
 - rust-lang#139485 (compiletest: Stricter parsing for diagnostic kinds)
 - rust-lang#139490 (Update some comment/docs related to "extern intrinsic" removal)
 - rust-lang#139491 (Update books)
 - rust-lang#139496 (Revert r-a changes of rust-lang#139455)
 - rust-lang#139500 (document panic behavior of Vec::resize and Vec::resize_with)
 - rust-lang#139501 (Fix stack overflow in exhaustiveness due to recursive HIR opaque hidden types)
 - rust-lang#139504 (add missing word in doc comment)
 - rust-lang#139507 (compiletest: Trim whitespace from environment variable names)

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

Add job summary links to post-merge report

This should make it much easier to investigate the individual job test/duration changes.

The GitHub API handling is a bit crude, but I didn't want to include octocrab, because it more than doubles the current number of dependencies of `citool`...

Can be tested with:
```bash
$ cargo run --manifest-path src/ci/citool/Cargo.toml post-merge-report bad13a9 1e008dd
```

r? ``@marcoieni``

…iaskrgr

Rollup of 7 pull requests

Successful merges:

 - rust-lang#137412 (Ensure `swap_nonoverlapping` is really always untyped)
 - rust-lang#138869 (Try not to use verbatim paths in `Command::current_dir`)
 - rust-lang#138993 (Make `cfg_match!` a semitransparent macro)
 - rust-lang#139099 (Promise `array::from_fn` is generated in order of increasing indices)
 - rust-lang#139364 (Make the compiler suggest actual paths instead of visible paths if the visible paths are through any doc hidden path.)
 - rust-lang#139468 (Don't call `Span::with_parent` on the good path in `has_stashed_diagnostic`)
 - rust-lang#139481 (Add job summary links to post-merge report)

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

…iaskrgr

Rollup of 7 pull requests

Successful merges:

 - rust-lang#138869 (Try not to use verbatim paths in `Command::current_dir`)
 - rust-lang#138993 (Make `cfg_match!` a semitransparent macro)
 - rust-lang#139099 (Promise `array::from_fn` is generated in order of increasing indices)
 - rust-lang#139364 (Make the compiler suggest actual paths instead of visible paths if the visible paths are through any doc hidden path.)
 - rust-lang#139468 (Don't call `Span::with_parent` on the good path in `has_stashed_diagnostic`)
 - rust-lang#139481 (Add job summary links to post-merge report)
 - rust-lang#139573 (Miri subtree update)

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

…iaskrgr

Rollup of 7 pull requests

Successful merges:

 - rust-lang#138869 (Try not to use verbatim paths in `Command::current_dir`)
 - rust-lang#138993 (Make `cfg_match!` a semitransparent macro)
 - rust-lang#139099 (Promise `array::from_fn` is generated in order of increasing indices)
 - rust-lang#139364 (Make the compiler suggest actual paths instead of visible paths if the visible paths are through any doc hidden path.)
 - rust-lang#139468 (Don't call `Span::with_parent` on the good path in `has_stashed_diagnostic`)
 - rust-lang#139481 (Add job summary links to post-merge report)
 - rust-lang#139573 (Miri subtree update)

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

Rollup merge of rust-lang#139481 - Kobzol:post-merge-links, r=marcoieni

Add job summary links to post-merge report

This should make it much easier to investigate the individual job test/duration changes.

The GitHub API handling is a bit crude, but I didn't want to include octocrab, because it more than doubles the current number of dependencies of `citool`...

Can be tested with:
```bash
$ cargo run --manifest-path src/ci/citool/Cargo.toml post-merge-report bad13a9 1e008dd
```

r? ```@marcoieni```