deps: Upgrade package:checks, returning to published releases

There's now a new published version, so we can switch to that.

This effectively reverts e2d592d / #50.

Author: gnprice

pubspec.lock

@@ -148,12 +148,11 @@ packages:
   checks:
     dependency: "direct dev"
     description:
-      path: "pkgs/checks"
-      ref: HEAD
-      resolved-ref: "0b306dd5a8f9736fb428533b3ff3146e67380204"
-      url: "[email protected]:dart-lang/test.git"
-    source: git
-    version: "0.2.3-wip"
+      name: checks
+      sha256: "03c1a2e4a4d3341ce0512f1401204ecdcdca8cc035e373820a73929cc0bf4fd3"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.2"
   cli_util:
     dependency: transitive
     description:

pubspec.yaml

@@ -69,13 +69,7 @@ dev_dependencies:
   json_serializable: ^6.5.4
   build_runner: ^2.3.3
   test: ^1.23.1
-  checks:
-    # Get an unpublished change to fix version solving:
-    #   https://chat.zulip.org/#narrow/stream/243-mobile-team/topic/flutter.3A.20version.20solving.20failed/near/1541309
-    # TODO: Try returning to published releases with the next one after 0.2.1.
-    git:
-      url: [email protected]:dart-lang/test.git
-      path: pkgs/checks
+  checks: ^0.2.2
   drift_dev: ^2.5.2
 
 # For information on the generic Dart part of this file, see the