Update astral-sh/setup-uv action to v8 (#11)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/publish.yml

@@ -24,7 +24,7 @@ jobs:
     - uses: actions/checkout@v6
 
     - name: Install uv
-      uses: astral-sh/setup-uv@v4
+      uses: astral-sh/setup-uv@v8.2.0
       with:
         enable-cache: true
 

.github/workflows/test.yml

@@ -21,7 +21,7 @@ jobs:
     - uses: actions/checkout@v6
 
     - name: Install uv
-      uses: astral-sh/setup-uv@v4
+      uses: astral-sh/setup-uv@v8.2.0
       with:
         enable-cache: true
         cache-dependency-glob: "uv.lock"