use nightly

Signed-off-by: James Sturtevant <jsturtevant@gmail.com>

Author: jsturtevant

.github/workflows/copilot-setup-steps.yml

@@ -25,7 +25,9 @@ jobs:
       - name: Set up nightly rust 
         uses: actions-rust-lang/setup-rust-toolchain@46268bd060767258de96ed93c1251119784f2ab6  # v1.16.1
         with:
+          toolchain: nightly
           components: rustfmt
+          
 
       - uses: hyperlight-dev/ci-setup-workflow@f6bd9cc86d0737976d2128c8b8ced8edc017cbb4  # v1.9.0
         with: