MNT: Set hash of astral-sh/setup-uv (#104)

Author: matthewfeickert

.github/workflows/ci.yml

@@ -32,7 +32,7 @@ jobs:
           python-version: '3.x'
 
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v3
+        uses: astral-sh/setup-uv@023eb7875fa1caa15814da58d1df7350f8fb1fd9 # v3.1.3
 
       - name: Build v0.0.1 wheel and sdist
         run: |