fix: bump lodash version to fix vulnerability

Author: monitz87

package.json

@@ -49,7 +49,7 @@
     "@polymathnetwork/contract-wrappers": "2.0.0-beta.5",
     "ethereum-address": "^0.0.4",
     "json-stable-stringify": "^1.0.1",
-    "lodash": "^4.17.11",
+    "lodash": "^4.17.13",
     "semver": "^5.6.0",
     "uuid": "^3.3.2"
   },

yarn.lock

@@ -2945,11 +2945,6 @@ bignumber.js@7.2.1:
   resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-7.2.1.tgz#80c048759d826800807c4bfd521e50edbba57a5f"
   integrity sha512-S4XzBk5sMB+Rcb/LNcpzXr57VRTxgAvaAEDAl1AwRx27j00hT84O6OkteE7u8UB3NuaaygCRrEpqox4uDOrbdQ==
 
-bignumber.js@8.0.1:
-  version "8.0.1"
-  resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-8.0.1.tgz#5d419191370fb558c64e3e5f70d68e5947138832"
-  integrity sha512-zAySveTJXkgLYCBi0b14xzfnOs+f3G6x36I8w2a1+PFQpWk/dp0mI0F+ZZK2bu+3ELewDcSyP+Cfq++NcHX7sg==
-
 "bignumber.js@git+https://github.com/frozeman/bignumber.js-nolookahead.git":
   version "2.0.7"
   resolved "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934"
@@ -8615,7 +8610,7 @@ lodash@=4.17.4:
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
   integrity sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=
 
-lodash@^4.17.15:
+lodash@^4.17.13, lodash@^4.17.15:
   version "4.17.15"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
   integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==