Dual (nightly+stable) clippy run is forced under ci due to its bug

[ryoqun]

Problem

temporarily run stable clippy as well to scan the codebase for redundant_clones, which is disabled as nightly clippy is buggy:

rust-lang/rust-clippy#10577

i bisected to a particular upstream pr: rust-lang/rust#108944 (comment)

Proposed Solution

remove the dual run as soon as the upstream fixes this bug and we bump to the fixed nightly toolchain: rust-lang/rust-clippy#10577

[CriesofCarrots]

@ryoqun , is this still relevant?

[ryoqun]

@ryoqun , is this still relevant?

yeah. sadly, we have move on: anza-xyz#1661