[polari] appdata: Update screenshots

[Marge Bot <marge-bot src gnome org>]

commit 7726f046fd4159afcef36f665793749097853532
Author: Florian Müllner <fmuellner gnome org>
Date:   Sat Sep 4 04:34:58 2021 +0200

    appdata: Update screenshots
    
    Show off the new GTK4-goodness :-)
    
    Part-of: <https://gitlab.gnome.org/GNOME/polari/-/merge_requests/236>

 data/appdata/polari-connection-properties.png | Bin 141187 -> 138797 bytes
 data/appdata/polari-connection.png            | Bin 135105 -> 137342 bytes
 data/appdata/polari-join-dialog.png           | Bin 152098 -> 153854 bytes
 data/appdata/polari-main.png                  | Bin 133325 -> 136694 bytes
 data/appdata/polari-user-list.png             | Bin 153849 -> 166084 bytes
 5 files changed, 0 insertions(+), 0 deletions(-)
---
diff --git a/data/appdata/polari-connection-properties.png b/data/appdata/polari-connection-properties.png
index 833260a2..8fb4bd6a 100644
Binary files a/data/appdata/polari-connection-properties.png and 
b/data/appdata/polari-connection-properties.png differ
diff --git a/data/appdata/polari-connection.png b/data/appdata/polari-connection.png
index 640f5602..11e207ad 100644
Binary files a/data/appdata/polari-connection.png and b/data/appdata/polari-connection.png differ
diff --git a/data/appdata/polari-join-dialog.png b/data/appdata/polari-join-dialog.png
index a18241ec..c14dc1c4 100644
Binary files a/data/appdata/polari-join-dialog.png and b/data/appdata/polari-join-dialog.png differ
diff --git a/data/appdata/polari-main.png b/data/appdata/polari-main.png
index cd385d14..2315040f 100644
Binary files a/data/appdata/polari-main.png and b/data/appdata/polari-main.png differ
diff --git a/data/appdata/polari-user-list.png b/data/appdata/polari-user-list.png
index 8c521583..5d513298 100644
Binary files a/data/appdata/polari-user-list.png and b/data/appdata/polari-user-list.png differ