Update eth-json-rpc-filters in lockfile (#336)

This update includes dependency changes. Most notably,
`await-semaphore` is no longer a dependency, which should help solve
some TypeScript errors we were seeing on the prototype controller
redesign branch.

yarn.lock

@@ -635,6 +635,11 @@
   resolved "https://registry.yarnpkg.com/@metamask/eslint-config/-/eslint-config-3.2.0.tgz#66b9b2bea1616821506501e76de4ac991f34914f"
   integrity sha512-WKfB81fD5NZBFbj/UqMyfNss/b25XrukVC3j2mcaIEF0uzSKzh1b/yy7aXxcfXshWemHz28MOwZT9Bin5KV37w==
 
+"@metamask/safe-event-emitter@^2.0.0":
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/@metamask/safe-event-emitter/-/safe-event-emitter-2.0.0.tgz#af577b477c683fad17c619a78208cede06f9605c"
+  integrity sha512-/kSXhY692qiV1MXu6EeOZvg5nECLclxNXcKCxJ3cXQgYuRymRHpdx/t7JXfsK+JLjwA1e1c1/SBrlQYpusC29Q==
+
 "@nodelib/fs.scandir@2.1.3":
   version "2.1.3"
   resolved "https://registry.yarnpkg.com/@nodelib/fs.scandir/-/fs.scandir-2.1.3.tgz#3a582bdb53804c6ba6d146579c46e52130cf4a3b"
@@ -1229,6 +1234,13 @@ async-limiter@~1.0.0:
   resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.1.tgz#dd379e94f0db8310b08291f9d64c3209766617fd"
   integrity sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ==
 
+async-mutex@^0.2.6:
+  version "0.2.6"
+  resolved "https://registry.yarnpkg.com/async-mutex/-/async-mutex-0.2.6.tgz#0d7a3deb978bc2b984d5908a2038e1ae2e54ff40"
+  integrity sha512-Hs4R+4SPgamu6rSGW8C7cV9gaWUKEHykfzCCvIRuaVv636Ju10ZdeUbvb4TBEW0INuq2DHZqXbK4Nd3yG4RaRw==
+  dependencies:
+    tslib "^2.0.0"
+
 async@^1.4.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
@@ -2455,16 +2467,16 @@ eth-hd-keyring@^3.5.0:
     xtend "^4.0.1"
 
 eth-json-rpc-filters@^4.2.1:
-  version "4.2.1"
-  resolved "https://registry.yarnpkg.com/eth-json-rpc-filters/-/eth-json-rpc-filters-4.2.1.tgz#82204a13c99927dbf42cbb3962846650c6281f33"
-  integrity sha512-tPfohezq8mSmwa47xvq6PGzBDLZ0njWJMB1J+OPuv+n+1WkWDlf3l3tqJXpq96RxhrzK2q7wiweRS5aGIzpq4Q==
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/eth-json-rpc-filters/-/eth-json-rpc-filters-4.2.2.tgz#eb35e1dfe9357ace8a8908e7daee80b2cd60a10d"
+  integrity sha512-DGtqpLU7bBg63wPMWg1sCpkKCf57dJ+hj/k3zF26anXMzkmtSBDExL8IhUu7LUd34f0Zsce3PYNO2vV2GaTzaw==
   dependencies:
-    await-semaphore "^0.1.3"
+    "@metamask/safe-event-emitter" "^2.0.0"
+    async-mutex "^0.2.6"
     eth-json-rpc-middleware "^6.0.0"
     eth-query "^2.1.2"
-    json-rpc-engine "^5.3.0"
-    lodash.flatmap "^4.5.0"
-    safe-event-emitter "^1.0.1"
+    json-rpc-engine "^6.1.0"
+    pify "^5.0.0"
 
 eth-json-rpc-infura@^5.1.0:
   version "5.1.0"
@@ -2544,6 +2556,13 @@ eth-rpc-errors@^4.0.0:
   dependencies:
     fast-safe-stringify "^2.0.6"
 
+eth-rpc-errors@^4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/eth-rpc-errors/-/eth-rpc-errors-4.0.2.tgz#11bc164e25237a679061ac05b7da7537b673d3b7"
+  integrity sha512-n+Re6Gu8XGyfFy1it0AwbD1x0MUzspQs0D5UiPs1fFPCr6WAwZM+vbIhXheBFrpgosqN9bs5PqlB4Q61U/QytQ==
+  dependencies:
+    fast-safe-stringify "^2.0.6"
+
 eth-sig-util@^1.4.0, eth-sig-util@^1.4.2:
   version "1.4.2"
   resolved "https://registry.yarnpkg.com/eth-sig-util/-/eth-sig-util-1.4.2.tgz#8d958202c7edbaae839707fba6f09ff327606210"
@@ -4540,6 +4559,14 @@ json-rpc-engine@^5.3.0:
     eth-rpc-errors "^3.0.0"
     safe-event-emitter "^1.0.1"
 
+json-rpc-engine@^6.1.0:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/json-rpc-engine/-/json-rpc-engine-6.1.0.tgz#bf5ff7d029e1c1bf20cb6c0e9f348dcd8be5a393"
+  integrity sha512-NEdLrtrq1jUZyfjkr9OCz9EzCNhnRyWtt1PAnvnhwy6e8XETS0Dtc+ZNCO2gvuAoKsIn2+vCSowXTYE4CkgnAQ==
+  dependencies:
+    "@metamask/safe-event-emitter" "^2.0.0"
+    eth-rpc-errors "^4.0.2"
+
 json-rpc-random-id@^1.0.0, json-rpc-random-id@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/json-rpc-random-id/-/json-rpc-random-id-1.0.1.tgz#ba49d96aded1444dbb8da3d203748acbbcdec8c8"
@@ -4844,11 +4871,6 @@ locate-path@^5.0.0:
   dependencies:
     p-locate "^4.1.0"
 
-lodash.flatmap@^4.5.0:
-  version "4.5.0"
-  resolved "https://registry.yarnpkg.com/lodash.flatmap/-/lodash.flatmap-4.5.0.tgz#ef8cbf408f6e48268663345305c6acc0b778702e"
-  integrity sha1-74y/QI9uSCaGYzRTBcaswLd4cC4=
-
 lodash.isequal@^4.5.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/lodash.isequal/-/lodash.isequal-4.5.0.tgz#415c4478f2bcc30120c22ce10ed3226f7d3e18e0"
@@ -5661,6 +5683,11 @@ pify@^3.0.0:
   resolved "https://registry.yarnpkg.com/pify/-/pify-3.0.0.tgz#e5a4acd2c101fdf3d9a4d07f0dbc4db49dd28176"
   integrity sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=
 
+pify@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/pify/-/pify-5.0.0.tgz#1f5eca3f5e87ebec28cc6d54a0e4aaf00acc127f"
+  integrity sha512-eW/gHNMlxdSP6dmG6uJip6FXN0EQBwm2clYYd8Wul42Cwu/DK8HEftzsapcNdYe2MfLiIwZqsDk2RDEsTE79hA==
+
 pirates@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/pirates/-/pirates-4.0.1.tgz#643a92caf894566f91b2b986d2c66950a8e2fb87"
@@ -6951,6 +6978,11 @@ tslib@^1.9.0:
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.13.0.tgz#c881e13cc7015894ed914862d276436fa9a47043"
   integrity sha512-i/6DQjL8Xf3be4K/E6Wgpekn5Qasl1usyw++dAA35Ue5orEn65VIxOA+YvNNl9HV3qv70T7CNwjODHZrLwvd1Q==
 
+tslib@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.1.0.tgz#da60860f1c2ecaa5703ab7d39bc05b6bf988b97a"
+  integrity sha512-hcVC3wYEziELGGmEEXue7D75zbwIIVUMWAVbHItGPx0ziyXxrOMQx4rQEVEV45Ut/1IotuEvwqPopzIOkDMf0A==
+
 tsutils@^3.17.1:
   version "3.17.1"
   resolved "https://registry.yarnpkg.com/tsutils/-/tsutils-3.17.1.tgz#ed719917f11ca0dee586272b2ac49e015a2dd759"