[NIXL][XPU] fix nixl version to v0.7.0

Signed-off-by: zhenwei-intel <[email protected]>

Author: zhenwei-intel

tools/install_nixl_from_source_ubuntu.py

@@ -146,6 +146,7 @@ def build_and_install_prerequisites(args):
     print("\n[2/3] Building NIXL wheel from source...", flush=True)
     if not os.path.exists(NIXL_DIR):
         run_command(["git", "clone", NIXL_REPO_URL, NIXL_DIR])
+    run_command(["git", "checkout", "0.7.0"], cwd=NIXL_DIR)
 
     build_env = os.environ.copy()
     build_env["PKG_CONFIG_PATH"] = os.path.join(ucx_install_path, "lib", "pkgconfig")