docs: add kristjanesperanto as a contributor for code (#139)

Adds @KristjanESPERANTO as a contributor for code.

This was requested by JoshuaKGoldberg [in this
comment](#137 (comment))

---------

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

.all-contributorsrc

@@ -122,7 +122,8 @@
       "profile": "https://github.com/KristjanESPERANTO",
       "contributions": [
         "ideas",
-        "bug"
+        "bug",
+        "code"
       ]
     },
     {

README.md

@@ -114,7 +114,7 @@ They can lint `package.json` files at project root and in any subfolder of the p
     </tr>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/kendallgassner"><img src="https://avatars.githubusercontent.com/u/15275462?v=4?s=100" width="100px;" alt="Kendall Gassner"/><br /><sub><b>Kendall Gassner</b></sub></a><br /><a href="https://github.com/JoshuaKGoldberg/eslint-plugin-package-json/commits?author=kendallgassner" title="Code">💻</a> <a href="#maintenance-kendallgassner" title="Maintenance">🚧</a></td>
-      <td align="center" valign="top" width="14.28%"><a href="https://github.com/KristjanESPERANTO"><img src="https://avatars.githubusercontent.com/u/35647502?v=4?s=100" width="100px;" alt="Kristjan ESPERANTO"/><br /><sub><b>Kristjan ESPERANTO</b></sub></a><br /><a href="#ideas-kristjanesperanto" title="Ideas, Planning, & Feedback">🤔</a> <a href="https://github.com/JoshuaKGoldberg/eslint-plugin-package-json/issues?q=author%3Akristjanesperanto" title="Bug reports">🐛</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/KristjanESPERANTO"><img src="https://avatars.githubusercontent.com/u/35647502?v=4?s=100" width="100px;" alt="Kristjan ESPERANTO"/><br /><sub><b>Kristjan ESPERANTO</b></sub></a><br /><a href="#ideas-kristjanesperanto" title="Ideas, Planning, & Feedback">🤔</a> <a href="https://github.com/JoshuaKGoldberg/eslint-plugin-package-json/issues?q=author%3Akristjanesperanto" title="Bug reports">🐛</a> <a href="https://github.com/JoshuaKGoldberg/eslint-plugin-package-json/commits?author=kristjanesperanto" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/nschonni"><img src="https://avatars.githubusercontent.com/u/1297909?v=4?s=100" width="100px;" alt="Nick Schonning"/><br /><sub><b>Nick Schonning</b></sub></a><br /><a href="https://github.com/JoshuaKGoldberg/eslint-plugin-package-json/commits?author=nschonni" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/sirugh"><img src="https://avatars.githubusercontent.com/u/1278869?v=4?s=100" width="100px;" alt="Stephen"/><br /><sub><b>Stephen</b></sub></a><br /><a href="https://github.com/JoshuaKGoldberg/eslint-plugin-package-json/commits?author=sirugh" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://ota-meshi.github.io/"><img src="https://avatars.githubusercontent.com/u/16508807?v=4?s=100" width="100px;" alt="Yosuke Ota"/><br /><sub><b>Yosuke Ota</b></sub></a><br /><a href="https://github.com/JoshuaKGoldberg/eslint-plugin-package-json/issues?q=author%3Aota-meshi" title="Bug reports">🐛</a> <a href="https://github.com/JoshuaKGoldberg/eslint-plugin-package-json/commits?author=ota-meshi" title="Code">💻</a></td>