[NPU] multimodal-gen-test-8-npu-a3,Cache pytorch dependency (#21470)

Co-authored-by: Kelon <kelonlu@163.com>

.github/workflows/pr-test-npu.yml

@@ -392,13 +392,16 @@ jobs:
           git config --system --add safe.directory ${GITHUB_WORKSPACE}
 
       - name: Install dependencies
+        env:
+          TORCH_CACHE_URL: "http://cache-service.nginx-pypi-cache.svc.cluster.local/whl/cpu"
+          PYPI_CACHE_URL: "http://cache-service.nginx-pypi-cache.svc.cluster.local/pypi/simple"
+          GITHUB_PROXY_URL: "https://gh-proxy.test.osinfra.cn/"
         run: |
           # speed up by using infra cache services
           CACHING_URL="cache-service.nginx-pypi-cache.svc.cluster.local"
           sed -Ei "s@(ports|archive).ubuntu.com@${CACHING_URL}:8081@g" /etc/apt/sources.list
           pip config set global.index-url http://${CACHING_URL}/pypi/simple
-          pip config set global.extra-index-url "https://pypi.tuna.tsinghua.edu.cn/simple"
-          pip config set global.trusted-host "${CACHING_URL} pypi.tuna.tsinghua.edu.cn"
+          pip config set global.trusted-host "${CACHING_URL}"
 
           bash scripts/ci/npu/npu_ci_install_dependency.sh a3 diffusion
           # copy required file from our daily cache