submodules: update clippy from 891e1a8 to b7c802b

Changes:
````
rustup to #70043
map_clone: avoid suggesting `copied()` for &mut
fix redundant_pattern_matching lint
Add tests for #1654
Don't trigger while_let_on_iterator when the iterator is recreated every iteration
Update issue_2356.stderr reference file
Update while_let_on_iterator tests
Fix while_let_on_iterator suggestion and make it MachineApplicable
Add lifetime test case for `new_ret_no_self`
rustup #71215
Downgrade match_bool to pedantic
Run fetch before testing if master contains beta
The beta branch update should not require a force push
Add a note to the beta sections of release.md
Remove apt-get upgrade again
Always use the deploy script and templates of the master branch
README: fix lit count line
clippy_dev: make it fatal when the regex for updating lint count does not match
`predecessors_for` will be removed soon
Rustup "Remove `BodyAndCache`"
Only run (late) internal lints, when they are warn/deny/forbid
Only run cargo lints, when they are warn/deny/forbid
span_lint_and_note now takes an Option<Span> for the note_span instead of just a span
Make lint also capture blocks and closures, adjust language to mention other mutex types
don't test the code in the lint docs
Switch to matching against full paths instead of just the last element of the path
Lint for holding locks across await points
Also mention `--fix` for nightly users
fix crash on issue-69020-assoc-const-arith-overflow.rs
Address review comments
remark fixes
Update CHANGELOG.md for Rust 1.43 and 1.44
update stderr file
util/fetch_prs_between.sh: Add Markdown formatted Link
factor ifs into function, add differing mutex test
Update the changelog update documentation
Apply suggestions from PR review
update span_lint_and_help call to six args
test for mutex eq, add another test case
use if chain
cargo dev fmt
fix map import to rustc_middle
dev update_lints
fix internal clippy warnings
change visitor name to OppVisitor
use Visitor api to find Mutex::lock calls
add note about update-all-refs script, revert redundant pat to master
move closures to seperate fns, remove known problems
use span_lint_and_help, cargo dev fmt
creating suggestion
progress work on suggestion for auto fix
Implement unsafe_derive_deserialize lint
Update empty_enum.stderr
Formatting and naming
Formatting and naming
Cleanup: `node_id` -> `hir_id`
Fix issue #2907.
Don't trigger toplevel_ref_arg for `for` loops
Cleanup: future_not_send: use `return_ty` method
Remove badge FIXME from Cargo.toml
Change note_span argument for span_lint_and_note.
Add an Option<Span> argument to span_lint_and_help.
Fixes internal lint warning in code base.
Implement collapsible_span_lint_calls lint.
````

Fixes #71453