Automator: update common-files@master in istio/proxy@master

Author: istio-testing

common/.commonfiles.sha

@@ -1 +1 @@
-8b85c8f6387b7cd77ddcc47a455e1e9a92040e6b
+ef6a4e56b90f8868edb8624afd8c22cc14073af2

common/scripts/setup_env.sh

@@ -77,7 +77,7 @@ fi
 TOOLS_REGISTRY_PROVIDER=${TOOLS_REGISTRY_PROVIDER:-registry.istio.io}
 PROJECT_ID=${PROJECT_ID:-testing}
 if [[ "${IMAGE_VERSION:-}" == "" ]]; then
-  IMAGE_VERSION=master-ff93080f0b66b1649fd6f3bfa6b63f74be377937-arm64
+  IMAGE_VERSION=master-b7201a4e3411e85dff202449182d26efd7491b89
 fi
 if [[ "${IMAGE_NAME:-}" == "" ]]; then
   IMAGE_NAME=build-tools