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

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-AXIOS-1038255

package-lock.json

@@ -280,11 +280,11 @@
       "dev": true
     },
     "axios": {
-      "version": "0.16.1",
-      "resolved": "https://registry.npmjs.org/axios/-/axios-0.16.1.tgz",
-      "integrity": "sha512-dm8XNlNAD6yRqbxfzK3OBtNs/953XqC6sns+c2jtk8Q1u24ZYPVfQUwtAFJ/PBBSDmafcCg5C3DCJjReOFFRZQ==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-0.21.1.tgz",
+      "integrity": "sha512-dKQiRHxGD9PPRIUNIWvZhPTPpl1rf/OxTYKsqKUDjBwYylTvV7SjSHJb9ratfyzM6wCdLCOYLzs73qpg5c4iGA==",
       "requires": {
-        "follow-redirects": "^1.2.3"
+        "follow-redirects": "^1.10.0"
       }
     },
     "babel-code-frame": {
@@ -2143,9 +2143,9 @@
       "dev": true
     },
     "follow-redirects": {
-      "version": "1.15.2",
-      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.2.tgz",
-      "integrity": "sha512-VQLG33o04KaQ8uYi2tVNbdrWp1QWxNNea+nmIB4EVM28v0hmP17z7aG1+wAkNzVq4KeXTq3221ye5qTJP91JwA=="
+      "version": "1.13.1",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.13.1.tgz",
+      "integrity": "sha512-SSG5xmZh1mkPGyKzjZP8zLjltIfpW32Y5QpdNJyjcfGxK3qo3NDDkZOZSFiGn1A6SclQxY9GzEwAHQ3dmYRWpg=="
     },
     "for-in": {
       "version": "1.0.2",

package.json

@@ -11,7 +11,7 @@
   },
   "dependencies": {
     "ag-grid-vue": "^17.0.0",
-    "axios": "^0.16.1",
+    "axios": "^0.21.1",
     "connect-history-api-fallback": "^1.3.0",
     "debounce": "^1.0.0",
     "express": "^4.16.1",