install uv for benchmark CI

Author: 2bndy5

.github/workflows/benchmark.yml

@@ -120,6 +120,8 @@ jobs:
         run: cargo binstall -y hyperfine
       - name: Install nushell
         uses: hustcer/setup-nu@985d59ec83ae3e3418f9d36471cda38b9d8b9879 # v3.20
+      - name: Install uv
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
 
       - name: Run benchmark script
         working-directory: benchmark