message: Windows: Fix ext authz integration test flake
  Bump timeout to ext authz service to 300s
  Fixes
diff: @@ -629,7 +629,7 @@ TEST_P(ExtAuthzLocalReplyIntegrationTest, DeniedHeaderTest) {
  server_uri:
  uri: "ext_authz:9000"
  cluster: "ext_authz"
  - timeout: 0.25s
  + timeout: 300s
  )EOF";
  TestUtility::loadFromYaml(ext_authz_config, proto_config);
  