Bump tools to 7bf22c951019f860aa52a8b7dc97fba5880aa9ba

Changes:
```
> git log --format="%C(auto) %h %s" 1e110fc..7bf22c9
 https://dart.googlesource.com/tools.git/+/7bf22c95 [unified_analytics]Add library cycle info to analysis server data (2117)

```

Diff: https://dart.googlesource.com/tools.git/+/1e110fcf8da4fbd423e22ae7d14f04c908d7c139..7bf22c951019f860aa52a8b7dc97fba5880aa9ba/
Change-Id: I0cd6893dc35fd4dc938070afb4ec1c2f45054dea
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/436943
Reviewed-by: Keerti Parthasarathy <keertip@google.com>
Auto-Submit: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Keerti Parthasarathy <keertip@google.com>

https://dart.googlesource.com/sdk/+/8f1a2b39ea1668323366b68124f22788874d2b7e

DEPS

diff --git a/DEPS b/DEPS
index f2475dd..ded36d0 100644
--- a/DEPS
+++ b/DEPS
@@ -75,7 +75,7 @@
   'dart_protobuf_rev': '0bfff0ca150959c92dac525474d73bde946f3391',
   'dart_pub_rev': 'f6457fd20c9a9734a747262b1bcc2200c8357efb',
   'dart_sync_http_rev': 'dc54465f07d9652875deeade643256dafa2fbc6c',
-  'dart_tools_rev': '1e110fcf8da4fbd423e22ae7d14f04c908d7c139',
+  'dart_tools_rev': '7bf22c951019f860aa52a8b7dc97fba5880aa9ba',
   'dart_vector_math_rev': '13f185f7e97d559e003f5ac79201da12f9a01049',
   'dart_web_rev': '4b2f02ebc74acef26fa1285801a626213c35b304',
   'dart_webdev_rev': '6dc3ddefdacf8c575d1636d77921f490ff07792d',
@@ -235,7 +235,7 @@
 ]
 
 deps = {
-  'flutter/engine/src/flutter/third_party/dart': Var('dart_git') + '/sdk' + '@' + 'b01748931205719b9544e3a557ba0b0a2ca2f420',
+  'flutter/engine/src/flutter/third_party/dart': Var('dart_git') + '/sdk' + '@' + '8f1a2b39ea1668323366b68124f22788874d2b7e',
 
   'flutter': Var('flutter_git') + '/mirrors/flutter' + '@' + 'f8f7455a1219e80bf808f46925915e2d64c4ef7a',
 

commits.json

diff --git a/commits.json b/commits.json
index 3f61383..ad7f0a6 100644
--- a/commits.json
+++ b/commits.json
@@ -1,4 +1,4 @@
 {
   "flutter":"f8f7455a1219e80bf808f46925915e2d64c4ef7a",
-  "flutter/engine/src/flutter/third_party/dart":"b01748931205719b9544e3a557ba0b0a2ca2f420"
+  "flutter/engine/src/flutter/third_party/dart":"8f1a2b39ea1668323366b68124f22788874d2b7e"
 }
\ No newline at end of file