Update astral-sh/setup-uv action to v8

Author: renovate[bot]

.github/workflows/django_tests.yml

@@ -40,7 +40,7 @@ jobs:
       run: sudo apt-get install -y gdal-bin libgdal-dev libpq-dev
 
     - name: Install uv
-      uses: astral-sh/setup-uv@v7
+      uses: astral-sh/setup-uv@v8.1.0
       with:
         enable-cache: true
 

.github/workflows/pylint_black.yml

@@ -18,7 +18,7 @@ jobs:
       run: sudo apt-get install -y gdal-bin libgdal-dev libpq-dev
 
     - name: Install uv
-      uses: astral-sh/setup-uv@v7
+      uses: astral-sh/setup-uv@v8.1.0
       with:
         enable-cache: true