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

Author: renovate[bot]

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@v6
         with:
           python-version: "3.12"
 

.github/workflows/e2e-external-phase-2.yml

@@ -89,7 +89,7 @@ jobs:
           ref: ${{ steps.extract_commit.outputs.COMMIT_ID }}
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@v6
         with:
           python-version: "3.12"