Pin setup-uv to v8.1.0

astral-sh/setup-uv has not yet published a rolling v8 major-version tag
(only v8.0.0 and v8.1.0 exist), so @v8 fails to resolve. Pin to v8.1.0.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: shyuep

.github/workflows/lint.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
     - uses: actions/checkout@v6
     - name: Install uv with python version.
-      uses: astral-sh/setup-uv@v8
+      uses: astral-sh/setup-uv@v8.1.0
       with:
         python-version: ${{ matrix.python-version }}
         enable-cache: true

.github/workflows/test.yml

@@ -31,7 +31,7 @@ jobs:
     steps:
     - uses: actions/checkout@v6
     - name: Install uv with python version.
-      uses: astral-sh/setup-uv@v8
+      uses: astral-sh/setup-uv@v8.1.0
       with:
         python-version: ${{ matrix.python-version }}
         enable-cache: true
@@ -59,7 +59,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: Install uv with python version.
-        uses: astral-sh/setup-uv@v8
+        uses: astral-sh/setup-uv@v8.1.0
         with:
           python-version: ${{ matrix.python-version }}
           enable-cache: true