DEPS bump to pickup the latest linter.

Includes:

* Fix to skip overriding members in API doc checks (`public_member_api_docs`).
* Fix to suppress lints on synthetic nodes/tokens (#193).
* Message fixes (`annotate_overrides`, `public_member_api_docs`).
* Fix to exclude setters from return type checks (#192).

BUG=
R=brianwilkerson@google.com

Review URL: https://codereview.chromium.org/1770763007 .

DEPS

@@ -52,7 +52,7 @@ vars = {
   "intl_rev": "@a8b480b9c436f6c0ec16730804c914bdb4e30d53",
   "jinja2_rev": "@2222b31554f03e62600cd7e383376a7c187967a1",
   "json_rpc_2_tag": "@1.1.1",
-  "linter_rev": "@f90572f9be203a0ec9744aa3fb3b9509e3ca143d",
+  "linter_rev": "@a60289545b34ab1f047a0a3f0673a4c5abde0eaf",
   "logging_rev": "@85d83e002670545e9039ad3985f0018ab640e597",
   "markdown_rev": "@4aaadf3d940bb172e1f6285af4d2b1710d309982",
   "matcher_tag": "@0.12.0",