fix: package.json, package-lock.json & .snyk to reduce vulnerabilities

The following vulnerabilities are fixed with a Snyk patch:
- https://snyk.io/vuln/SNYK-JS-LODASH-567746

Author: snyk-bot

.snyk

@@ -18,3 +18,21 @@ patch:
         patched: '2020-04-30T14:34:25.161Z'
     - snyk-docker-plugin > @snyk/rpm-parser > eslint > table > lodash:
         patched: '2020-04-30T14:34:25.161Z'
+    - async > lodash:
+        patched: '2020-05-13T11:05:47.964Z'
+    - snyk-config > lodash:
+        patched: '2020-05-13T11:05:47.964Z'
+    - '@kubernetes/client-node > openid-client > lodash':
+        patched: '2020-05-13T11:05:47.964Z'
+    - '@kubernetes/client-node > openid-client > node-jose > lodash':
+        patched: '2020-05-13T11:05:47.964Z'
+    - snyk > snyk-nodejs-lockfile-parser > snyk-config > lodash:
+        patched: '2020-05-13T11:05:47.964Z'
+    - snyk-docker-plugin > @snyk/rpm-parser > eslint > lodash:
+        patched: '2020-05-13T11:05:47.964Z'
+    - snyk > snyk-mvn-plugin > @snyk/java-call-graph-builder > snyk-config > lodash:
+        patched: '2020-05-13T11:05:47.964Z'
+    - snyk-docker-plugin > @snyk/rpm-parser > eslint > inquirer > lodash:
+        patched: '2020-05-13T11:05:47.964Z'
+    - snyk-docker-plugin > @snyk/rpm-parser > eslint > table > lodash:
+        patched: '2020-05-13T11:05:47.964Z'

package-lock.json

@@ -49,7 +49,7 @@
     "typescript": "^3.8.3",
     "ws": "^7.2.1",
     "yaml": "^1.7.2",
-    "snyk": "^1.316.0"
+    "snyk": "^1.320.3"
   },
   "devDependencies": {
     "@typescript-eslint/eslint-plugin": "^2.22.0",