docs: add sneakers-the-rat as a contributor for code, a11y, and infra (#470)

* docs: update README.md [skip ci]

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

---------

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -101,7 +101,9 @@
         "code",
         "design",
         "ideas",
-        "question"
+        "question",
+        "a11y",
+        "infra"
       ]
     },
     {

README.md

@@ -138,7 +138,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
       <td align="center" valign="top" width="14.28%"><a href="http://blog.ucodery.com"><img src="https://avatars.githubusercontent.com/u/28751151?v=4?s=100" width="100px;" alt="Jeremy Paige"/><br /><sub><b>Jeremy Paige</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=ucodery" title="Code">💻</a> <a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3Aucodery" title="Reviewed Pull Requests">👀</a> <a href="#tutorial-ucodery" title="Tutorials">✅</a> <a href="#maintenance-ucodery" title="Maintenance">🚧</a> <a href="https://github.com/pyOpenSci/python-package-guide/commits?author=ucodery" title="Documentation">📖</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/kierisi"><img src="https://avatars.githubusercontent.com/u/23085445?v=4?s=100" width="100px;" alt="Jesse Mostipak"/><br /><sub><b>Jesse Mostipak</b></sub></a><br /><a href="#tutorial-kierisi" title="Tutorials">✅</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/John-Drake"><img src="https://avatars.githubusercontent.com/u/22374979?v=4?s=100" width="100px;" alt="John Drake"/><br /><sub><b>John Drake</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=John-Drake" title="Code">💻</a> <a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3AJohn-Drake" title="Reviewed Pull Requests">👀</a></td>
-      <td align="center" valign="top" width="14.28%"><a href="https://jon-e.net"><img src="https://avatars.githubusercontent.com/u/12961499?v=4?s=100" width="100px;" alt="Jonny Saunders"/><br /><sub><b>Jonny Saunders</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=sneakers-the-rat" title="Code">💻</a> <a href="#design-sneakers-the-rat" title="Design">🎨</a> <a href="#ideas-sneakers-the-rat" title="Ideas, Planning, & Feedback">🤔</a> <a href="#question-sneakers-the-rat" title="Answering Questions">💬</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://jon-e.net"><img src="https://avatars.githubusercontent.com/u/12961499?v=4?s=100" width="100px;" alt="Jonny Saunders"/><br /><sub><b>Jonny Saunders</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=sneakers-the-rat" title="Code">💻</a> <a href="#design-sneakers-the-rat" title="Design">🎨</a> <a href="#ideas-sneakers-the-rat" title="Ideas, Planning, & Feedback">🤔</a> <a href="#question-sneakers-the-rat" title="Answering Questions">💬</a> <a href="#a11y-sneakers-the-rat" title="Accessibility">️️️️♿️</a> <a href="#infra-sneakers-the-rat" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
       <td align="center" valign="top" width="14.28%"><a href="http://jhkennedy.org"><img src="https://avatars.githubusercontent.com/u/7882693?v=4?s=100" width="100px;" alt="Joseph H Kennedy"/><br /><sub><b>Joseph H Kennedy</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=jhkennedy" title="Code">💻</a> <a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3Ajhkennedy" title="Reviewed Pull Requests">👀</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://social.juanlu.space/@astrojuanlu"><img src="https://avatars.githubusercontent.com/u/316517?v=4?s=100" width="100px;" alt="Juan Luis Cano Rodríguez"/><br /><sub><b>Juan Luis Cano Rodríguez</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=astrojuanlu" title="Code">💻</a> <a href="#design-astrojuanlu" title="Design">🎨</a> <a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3Aastrojuanlu" title="Reviewed Pull Requests">👀</a></td>
     </tr>