docs: add HannesDi as a contributor (#686)

* docs: update CONTRIBUTORS.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

.all-contributorsrc

@@ -13,6 +13,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "HannesDi",
+      "name": "Hans-Jürgen Dinges",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/14812047?v=4",
+      "profile": "https://github.com/HannesDi",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

CONTRIBUTORS.md

@@ -1,5 +1,5 @@
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-1-orange.svg?style=flat-square)](CONTRIBUTORS.md)
+[![All Contributors](https://img.shields.io/badge/all_contributors-2-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 ## Contributors ✨
@@ -12,6 +12,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
 <table>
   <tr>
     <td align="center"><a href="https://github.com/Alomon31"><img src="https://avatars0.githubusercontent.com/u/59569925?v=4" width="100px;" alt=""/><br /><sub><b>Alomon31</b></sub></a><br /><a href="https://github.com/1technophile/OpenMQTTGateway/commits?author=Alomon31" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/HannesDi"><img src="https://avatars1.githubusercontent.com/u/14812047?v=4" width="100px;" alt=""/><br /><sub><b>Hans-Jürgen Dinges</b></sub></a><br /><a href="https://github.com/1technophile/OpenMQTTGateway/commits?author=HannesDi" title="Code">💻</a></td>
   </tr>
 </table>