Bump rust nightly version in lint-clippy-nightly

Author: devonh

.github/workflows/tests.yml

@@ -238,7 +238,7 @@ jobs:
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
-          toolchain: nightly-2025-04-23
+          toolchain: nightly-2026-02-01
           components: clippy
       - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2