Migrate workflows to Blacksmith

Author: blacksmith-sh[bot]

.github/workflows/e2e.yml

@@ -37,7 +37,7 @@ jobs:
   e2e:
     name: E2E Tests - ${{ matrix.library }}
     needs: discover
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     timeout-minutes: 30
     strategy:
       fail-fast: false
@@ -56,10 +56,8 @@ jobs:
       - name: Setup Python
         run: uv python install 3.9
 
-      - name: Setup Docker Buildx
-        uses: docker/setup-buildx-action@v3
-        with:
-          driver: docker
+      - name: Setup Blacksmith Builder
+        uses: useblacksmith/setup-docker-builder@v1
 
       - name: Install SDK dependencies
         run: uv sync --all-extras