DEPS bump to grab fixed linter.

Specifically:

  * Fix to accept casts to dynamic (#195).
  * Allow single char UPPER_CASE non-constants (#201).

BUG=
R=scheglov@google.com

Review URL: https://codereview.chromium.org/1848373002 .

DEPS

@@ -56,7 +56,7 @@ vars = {
  "intl_rev": "@a8b480b9c436f6c0ec16730804c914bdb4e30d53",
  "jinja2_rev": "@2222b31554f03e62600cd7e383376a7c187967a1",
  "json_rpc_2_tag": "@2.0.0",
- "linter_rev": "@a60289545b34ab1f047a0a3f0673a4c5abde0eaf",
+ "linter_rev": "@ca7c6b3f1085cf302c4726598704d36cf240695f",
  "logging_rev": "@85d83e002670545e9039ad3985f0018ab640e597",
  "markdown_rev": "@4aaadf3d940bb172e1f6285af4d2b1710d309982",
  "matcher_tag": "@0.12.0",