chore: add self to contribs

Author: sergxerj

package.json

@@ -43,7 +43,8 @@
     "Quentin Rossetti <quentin.rossetti@gmail.com>",
     "František Gič <frantisek.gic@gmail.com>",
     "Oskar Larsson Högfeldt <g@oskar-lh.name>",
-    "Amin Yahyaabadi <aminyahyaabadi74@gmail.com>"
+    "Amin Yahyaabadi <aminyahyaabadi74@gmail.com>",
+    "sergxerj"
   ],
   "license": "MIT",
   "bugs": {