Bump deepmerge from 1.5.1 to 3.2.0 in /terminus-core

Bumps [deepmerge](https://github.com/TehShrike/deepmerge) from 1.5.1 to 3.2.0.
- [Release notes](https://github.com/TehShrike/deepmerge/releases)
- [Changelog](https://github.com/TehShrike/deepmerge/blob/master/changelog.md)
- [Commits](https://github.com/TehShrike/deepmerge/compare/v1.5.1...v3.2.0)

terminus-core/package.json

@@ -44,7 +44,7 @@
     "zone.js": "0.8.4"
   },
   "dependencies": {
-    "deepmerge": "^1.5.0",
+    "deepmerge": "^3.2.0",
     "js-yaml": "^3.9.0",
     "winston": "^3.2.1"
   }

terminus-core/yarn.lock

@@ -216,10 +216,10 @@ debug@^4.1.1:
   dependencies:
     ms "^2.1.1"
 
-deepmerge@^1.5.0:
-  version "1.5.1"
-  resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-1.5.1.tgz#c053bf06fd7276f1994f70c09a0760cb61a56237"
-  integrity sha512-Ndl8eeOHB9dQkmT1HWCgY3t0odl4bmWKFzjQZBYAxVTNs2B3nn5b6orimRYHKZ4FI8psvZkA1INRCW6l7vc9lQ==
+deepmerge@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-3.2.0.tgz#58ef463a57c08d376547f8869fdc5bcee957f44e"
+  integrity sha512-6+LuZGU7QCNUnAJyX8cIrlzoEgggTM6B7mm+znKOX4t5ltluT9KLjN6g61ECMS0LTsLW7yDpNoxhix5FZcrIow==
 
 delayed-stream@~1.0.0:
   version "1.0.0"