Missed a spot when updating 10.1 -> 10.2.1.

PiperOrigin-RevId: 262148236
diff --git a/src/TulsiGeneratorIntegrationTests/update_goldens.sh b/src/TulsiGeneratorIntegrationTests/update_goldens.sh
index a0f9137..6c4b629 100755
--- a/src/TulsiGeneratorIntegrationTests/update_goldens.sh
+++ b/src/TulsiGeneratorIntegrationTests/update_goldens.sh
@@ -17,7 +17,7 @@
 
 # Update this whenever the version of Xcode needed to generate the goldens
 # changes.
-readonly XCODE_VERSION=10.1
+readonly XCODE_VERSION=10.2.1
 
 readonly WORKSPACE=$(bazel info workspace)
 readonly TEST_PATH="src/TulsiGeneratorIntegrationTests"