Bump axios version

Author: TarekAwwad

app/package-lock.json

@@ -16,7 +16,7 @@
     "@fortawesome/vue-fontawesome": "^0.1.9",
     "@tendermint/sig": "^0.4.1",
     "acorn": ">=5.7.4",
-    "axios": "^0.19.2",
+    "axios": "^0.21.1",
     "bip39": "^3.0.2",
     "bootstrap": "^4.4.1",
     "bootstrap-vue": "^2.12.0",