Update DevTools rev to b38abb81337b10c4b675d418e50f82a5fe6a894d

Change-Id: I49a5025377560eb6b63923777a18dddfc8717a6a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/407141
Commit-Queue: Elliott Brooks <[email protected]>
Reviewed-by: Kenzie Davisson <[email protected]>

Author: elliette

DEPS

@@ -101,7 +101,7 @@ vars = {
   "boringssl_rev": "d3f26f8af0853b4d337d2405281f91fdfbe64465",
   "browser-compat-data_tag": "ac8cae697014da1ff7124fba33b0b4245cc6cd1b", # v1.0.22
   "cpu_features_rev": "936b9ab5515dead115606559502e3864958f7f6e",
-  "devtools_rev": "8762b31f0d0ffeea6449fd02740e9ce7acb32503",
+  "devtools_rev": "b38abb81337b10c4b675d418e50f82a5fe6a894d",
   "icu_rev": "43953f57b037778a1b8005564afabe214834f7bd",
   "jinja2_rev": "2222b31554f03e62600cd7e383376a7c187967a1",
   "libcxx_rev": "44079a4cc04cdeffb9cfe8067bfb3c276fb2bab0",