chore(deps): Update docker/setup-buildx-action action to v4

Author: cloudquery-ci[bot]

.github/workflows/unittests.yml

@@ -17,7 +17,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
       - # Required for the package command tests to work
         name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3
+        uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4
       - name: Install uv
         uses: astral-sh/setup-uv@cec208311dfd045dd5311c1add060b2062131d57 # v8
         with: