Fix axios dependency

Author: Smith8154

package.json

@@ -1,9 +1,9 @@
 {
   "private": false,
-  "displayName": "Air Gradient",
+  "displayName": "AirGradient",
   "name": "homebridge-airgradient",
-  "version": "1.0.1",
-  "description": "Fetches air quality information from Air Gradient devices.",
+  "version": "1.0.2",
+  "description": "Fetches air quality information from AirGradient devices.",
   "license": "Apache-2.0",
   "repository": {
     "type": "git",
@@ -12,6 +12,9 @@
   "bugs": {
     "url": "https://github.com/Smith8154/homebridge-airgradient/issues"
   },
+  "dependencies": {
+    "axios": "^0.21.1"
+  },
   "engines": {
     "node": "^18.17.0 || ^20.9.0",
     "homebridge": "^1.6.0"