submodules: update clippy from 1b89724b to e648adf0

[matthiaskrgr]

Fixes clippy toolstate

Changes:

Catch up with `format_args` change
Fix bad `while_let_on_iterator` suggestion.
rustup https://github.com/rust-lang/rust/pull/57747
Fixing issues pointed out by dogfood tests.
Update to collect all the files then throw the error.
Adding a test for checking if test files are missing.
Remove bors.toml
add applicability to lint name suggestion

r? @oli-obk