chore(deps): update astral-sh/setup-uv action to v6.3.1

Author: anaconda-renovate[bot]

.github/workflows/release.yml

@@ -23,7 +23,7 @@ jobs:
           python-version: '3.13'
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v3
+        uses: astral-sh/setup-uv@bd01e18f51369d5a26f1651c3cb451d3417e3bba # v6.3.1
 
       - name: Check tag matches pyproject.toml version
         run: |

.github/workflows/test.yml

@@ -16,7 +16,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install the latest version of uv and set the python version
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@bd01e18f51369d5a26f1651c3cb451d3417e3bba # v6.3.1
         with:
           python-version: ${{ matrix.python-version }}
           activate-environment: true