Update to use setup-uv@v6

Author: OCopping

.github/actions/install_requirements/action.yml

@@ -22,11 +22,12 @@ runs:
       shell: bash
 
     - name: Install uv and set the python version
-      uses: astral-sh/setup-uv@v5
+      uses: astral-sh/setup-uv@v6
       with:
         python-version: ${{ env.PYTHON_VERSION }}
         enable-cache: true
         cache-dependency-glob: "uv.lock"
+        activate-environment: true
 
     - name: Install packages
       run: uv sync ${{ inputs.uv-sync }}