Bump DevTools to version 2.15.0

Change-Id: If91997a7eeef94af777732bb852960a44e5ea508
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/250412
Reviewed-by: Devon Carew <devoncarew@google.com>
Commit-Queue: Kenzie Davisson <kenzieschmoll@google.com>
diff --git a/DEPS b/DEPS
index 6ba6564..7fd03d1 100644
--- a/DEPS
+++ b/DEPS
@@ -109,7 +109,7 @@
   "dart_style_rev": "d7b73536a8079331c888b7da539b80e6825270ea", # manually rev'd
 
   "dartdoc_rev": "900432d8cb1e75c4f28c79d94c3036fd3b3ec21d",
-  "devtools_rev": "0aa619c42a68d6db4c94a7838121811aba8f5eb1",
+  "devtools_rev": "95d292626da26505b02417735f77e8922783b477",
   "ffi_rev": "18b2b549d55009ff594600b04705ff6161681e07",
   "file_rev": "0132eeedea2933513bf230513a766a8baeab0c4f",
   "fixnum_rev": "164712f6547cdfb2709b752188186baf31fd1730",