Bump axios from 0.19.0 to 0.21.1 in /plejd

Bumps [axios](https://github.com/axios/axios) from 0.19.0 to 0.21.1.
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/v0.21.1/CHANGELOG.md)
- [Commits](https://github.com/axios/axios/compare/v0.19.0...v0.21.1)

Signed-off-by: dependabot[bot] <support@github.com>

plejd/package.json

@@ -1,7 +1,7 @@
 {
   "dependencies": {
     "@abandonware/bluetooth-hci-socket": "0.5.3-3",
-    "axios": "^0.19.0",
+    "axios": "^0.21.1",
     "buffer-xor": "^2.0.2",
     "dbus-next": "^0.8.1",
     "fs": "0.0.1-security",