ci: fix setup-uv tag (v8 -> v8.0.0, no shorthand tag exists)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: flyersworder

.github/workflows/ci.yml

@@ -28,7 +28,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: astral-sh/setup-uv@v8
+      - uses: astral-sh/setup-uv@v8.0.0
         with:
           enable-cache: true
           cache-dependency-glob: "pyproject.toml"
@@ -44,7 +44,7 @@ jobs:
         python-version: ["3.12", "3.13"]
     steps:
       - uses: actions/checkout@v6
-      - uses: astral-sh/setup-uv@v8
+      - uses: astral-sh/setup-uv@v8.0.0
         with:
           enable-cache: true
           cache-dependency-glob: "pyproject.toml"
@@ -60,7 +60,7 @@ jobs:
       id-token: write
     steps:
       - uses: actions/checkout@v6
-      - uses: astral-sh/setup-uv@v8
+      - uses: astral-sh/setup-uv@v8.0.0
         with:
           enable-cache: true
       - run: uv python install 3.13