Bump async from 0.9.0 to 2.6.4 (#2736)

Bumps [async](https://github.com/caolan/async) from 0.9.0 to 2.6.4.
- [Release notes](https://github.com/caolan/async/releases)
- [Changelog](https://github.com/caolan/async/blob/v2.6.4/CHANGELOG.md)
- [Commits](caolan/async@0.9.0...v2.6.4)

---
updated-dependencies:
- dependency-name: async
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

packages/pg/package.json

@@ -29,7 +29,7 @@
     "pgpass": "1.x"
   },
   "devDependencies": {
-    "async": "0.9.0",
+    "async": "2.6.4",
     "bluebird": "3.5.2",
     "co": "4.6.0",
     "pg-copy-streams": "0.3.0"

yarn.lock

@@ -1344,16 +1344,18 @@ astral-regex@^1.0.0:
   resolved "https://registry.yarnpkg.com/astral-regex/-/astral-regex-1.0.0.tgz#6c8c3fb827dd43ee3918f27b82782ab7658a6fd9"
   integrity sha512-+Ryf6g3BKoRc7jfp7ad8tM4TtMiaWvbF/1/sQcZPkkS7ag3D5nMBCe2UfOTONtAkaG0tO0ij3C5Lwmf1EiyjHg==
 
-async@0.9.0:
-  version "0.9.0"
-  resolved "https://registry.yarnpkg.com/async/-/async-0.9.0.tgz#ac3613b1da9bed1b47510bb4651b8931e47146c7"
-  integrity sha1-rDYTsdqb7RtHUQu0ZRuJMeRxRsc=
-
 async@1.x:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
   integrity sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=
 
+async@2.6.4:
+  version "2.6.4"
+  resolved "https://registry.yarnpkg.com/async/-/async-2.6.4.tgz#706b7ff6084664cd7eae713f6f965433b5504221"
+  integrity sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==
+  dependencies:
+    lodash "^4.17.14"
+
 asynckit@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"