Add @dependabot-preview[bot] as a contributor

Author: rtfpessoa

.all-contributorsrc

@@ -327,6 +327,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "dependabot-preview[bot]",
+      "name": "dependabot-preview[bot]",
+      "avatar_url": "https://avatars.githubusercontent.com/in/2141?v=4",
+      "profile": "https://github.com/apps/dependabot-preview",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7

README.md

@@ -536,6 +536,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="https://github.com/xlith"><img src="https://avatars.githubusercontent.com/u/510560?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Civan Yavuzşen</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=xlith" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/timgates42"><img src="https://avatars.githubusercontent.com/u/47873678?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Tim Gates</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=timgates42" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/campersau"><img src="https://avatars.githubusercontent.com/u/4009570?v=4?s=100" width="100px;" alt=""/><br /><sub><b>campersau</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=campersau" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/apps/dependabot-preview"><img src="https://avatars.githubusercontent.com/in/2141?v=4?s=100" width="100px;" alt=""/><br /><sub><b>dependabot-preview[bot]</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=dependabot-preview[bot]" title="Code">💻</a></td>
   </tr>
 </table>