linter 0.1.73

# 0.1.73

* deprecated `prefer_bool_in_asserts` (redundant w/ Dart 2 checks)
* improved doc generation to highlight deprecated and experimental lints
* bumped analyzer lower-bound to `0.33.4`
* bumped SDK lower-bound to `2.1.0`
* new lint: `unnecessary_await_in_return`


Change-Id: I00bf626029d8e1290193e3e83a9894f175046048
Reviewed-on: https://dart-review.googlesource.com/c/85425
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Phil Quitslund <pquitslund@google.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6c54a48..bf899ae 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,18 @@
 
 #### Pub
 
+#### Linter
+
+The linter was bumped to `0.1.73` which introduces the following new lints to the SDK:
+
+* `unnecessary_await_in_return`
+* `use_function_type_syntax_for_parameters`
+* `avoid_returning_null_for_future`
+* `avoid_shadowing_type_parameters`
+
+In addition, `prefer_bool_in_asserts` has been deprecated as its semantics are
+redundant with Dart 2 checks.
+
 #### Other Tools
 
 ## 2.2.0-dev.0.0
diff --git a/DEPS b/DEPS
index b83815d..bccc28f 100644
--- a/DEPS
+++ b/DEPS
@@ -95,7 +95,7 @@
   "intl_tag": "0.15.7",
   "jinja2_rev": "2222b31554f03e62600cd7e383376a7c187967a1",
   "json_rpc_2_tag": "2.0.9",
-  "linter_tag": "0.1.71",
+  "linter_tag": "0.1.73",
   "logging_tag": "0.11.3+2",
   "markdown_tag": "2.0.2",
   "matcher_tag": "0.12.3",