minor: use ubuntu-latest instead of self-hosted runner for amd build (#2861)

.github/workflows/release-docker-amd.yml

@@ -10,19 +10,27 @@ on:
 jobs:
   publish:
     if: github.repository == 'sgl-project/sglang'
-    runs-on: docker-builder-amd
+    runs-on: ubuntu-latest
     environment: 'prod'
     strategy:
       matrix:
         rocm_version: ['6.2.0']
         build_type: ['all', 'srt']
     steps:
-      - name: Delete huge unnecessary tools folder
-        run: rm -rf /opt/hostedtoolcache
-
       - name: Checkout repository
         uses: actions/checkout@v3
 
+      - name: Free disk space
+        uses: jlumbroso/free-disk-space@main
+        with:
+          tool-cache: false
+          docker-images: false
+          android: true
+          dotnet: true
+          haskell: true
+          large-packages: true
+          swap-storage: false
+
       - name: Login to Docker Hub
         uses: docker/login-action@v2
         with: