ci: pin setup-uv to v8.2.0 (no moving v8 tag exists)

Author: AbdelStark

.github/workflows/tui-smoke.yml

@@ -25,7 +25,7 @@ jobs:
       - uses: actions/checkout@v6
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v8
+        uses: astral-sh/setup-uv@v8.2.0
 
       - name: Build pwm-tui
         run: cargo build -p pwm-tui --release --locked