Add bohde as maintainer (#31601)

[4 merged
PRs](https://github.com/go-gitea/gitea/pulls?q=is%3Apr+author%3Abohde+is%3Aclosed)
✅

MAINTAINERS

@@ -62,3 +62,4 @@ Gary Wang <git@blumia.net> (@BLumia)
 Tim-Niclas Oelschläger <zokki.softwareschmiede@gmail.com> (@zokkis)
 Yu Liu <1240335630@qq.com> (@HEREYUA)
 Kemal Zebari <kemalzebra@gmail.com> (@kemzeb)
+Rowan Bohde <rowan.bohde@gmail.com> (@bohde)