update labels

Author: kevmoo

static/sdk_labels.json

@@ -113,6 +113,7 @@
  "crash",
  "customer-analyzer",
  "customer-bazel",
+ "customer-castaway",
  "customer-cider",
  "customer-dart-2",
  "customer-dart-sass",
@@ -186,6 +187,7 @@
  "fe-analyzer-shared-technical-debt",
  "feature-augmentations",
  "feature-enhanced-parts",
+ "feature-enum-shorthands",
  "feature-extension-types",
  "feature-macros",
  "feature-null-aware-elements",