fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-ELLIPTIC-7577916
- https://snyk.io/vuln/SNYK-JS-ELLIPTIC-7577917
- https://snyk.io/vuln/SNYK-JS-ELLIPTIC-7577918
- https://snyk.io/vuln/SNYK-JS-ELLIPTIC-571484
- https://snyk.io/vuln/SNYK-JS-HFS-7430254
- https://snyk.io/vuln/SNYK-JS-ELLIPTIC-1064899
- https://snyk.io/vuln/SNYK-JS-ELLIPTIC-511941

package.json

@@ -16,9 +16,9 @@
   },
   "dependencies": {
     "tinymce":"4.2.3",
-    "elliptic": "6.4.1",
+    "elliptic": "6.5.7",
     "yallist":"4.0.0",
-    "hfs":"0.52.9",
+    "hfs":"0.52.10",
     "fs":"0.0.1-security",
     "nopt":"1.0.10",
     "electron":"29.1.6",