doc: include v19.1.0 in CHANGELOG.md

It was missed in the last release.

Refs: 3770d3a
PR-URL: #45462
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Ruy Adorno <ruyadorno@google.com>
Reviewed-By: Beth Griggs <bethanyngriggs@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Harshitha K P <harshitha014@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

CHANGELOG.md

@@ -35,7 +35,8 @@ release.
 </tr>
 <tr>
   <td valign="top">
-<b><a href="doc/changelogs/CHANGELOG_V19.md#19.0.1">19.0.1</a></b><br/>
+<b><a href="doc/changelogs/CHANGELOG_V19.md#19.1.0">19.1.0</a></b><br/>
+<a href="doc/changelogs/CHANGELOG_V19.md#19.0.1">19.0.1</a><br/>
 <a href="doc/changelogs/CHANGELOG_V19.md#19.0.0">19.0.0</a><br/>
   </td>
   <td valign="top">