install specific version

.gitea/workflows/backend.yaml

@@ -56,7 +56,7 @@ jobs:
             backend/target
           key: ${{ runner.os }}-cargo-test-${{ hashFiles('backend/Cargo.lock') }}
       - name: Install Nextest
-        run: cargo install cargo-nextest
+        run: cargo install --version '^0.9' cargo-nextest
       - name: Build Binary with Shutdown
         run: cargo build --features shutdown --bin nuchat
       - name: Run Tests