Fix: Add Rust toolchain to pre-commit-autoupdate workflow

Author: alexdewar

.github/workflows/pre-commit-autoupdate.yml

@@ -20,6 +20,7 @@ jobs:
         with:
           persist-credentials: false
       - uses: actions/setup-python@v5
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
       - uses: browniebroke/pre-commit-autoupdate-action@main
       # - uses: peter-evans/create-pull-request@v7
       #   with: