fix: toolchain build ref

Author: nhtyy

.github/workflows/ci.yml

@@ -47,7 +47,7 @@ jobs:
         uses: actions/checkout@v3
         with:
           repository: succinctlabs/sp1
-          ref: dev
+          ref: n/rust-1.85.0
           path: sp1
 
       - name: Build
@@ -95,7 +95,7 @@ jobs:
         uses: actions/checkout@v3
         with:
           repository: succinctlabs/sp1
-          ref: n/toolchain-verbose
+          ref: n/rust-1.85.0
           path: sp1
 
       - name: Build