docs: add changelog for openclaw#2650

Author: obviyus

CHANGELOG.md

@@ -55,6 +55,7 @@ Status: unreleased.
 - Telegram: add optional silent send flag (disable notifications). (#2382) Thanks @Suksham-sharma.
 - Telegram: support editing sent messages via message(action="edit"). (#2394) Thanks @marcelomar21.
 - Telegram: add sticker receive/send with vision caching. (#2629) Thanks @longjos.
+- Telegram: send sticker pixels to vision models. (#2650)
 - Config: apply config.env before ${VAR} substitution. (#1813) Thanks @spanishflu-est1918.
 - Slack: clear ack reaction after streamed replies. (#2044) Thanks @fancyboi999.
 - macOS: keep custom SSH usernames in remote target. (#2046) Thanks @algal.