fix(ci): fetch full history in checkout to allow three-dot diff in contract CI

Author: 1Judah

.github/workflows/contract-ci.yml

@@ -21,6 +21,8 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable