Flatpak: Update dependencies

flatpak/org.gajim.Gajim.Plugin.url_image_preview.yaml

@@ -1,6 +1,6 @@
 id: org.gajim.Gajim.Devel.Plugin.url_image_preview
 runtime: org.gajim.Gajim.Devel
-sdk: org.gnome.Sdk//40
+sdk: org.gnome.Sdk//41
 build-extension: true
 separate-locales: false
 appstream-compose: false
@@ -21,8 +21,8 @@ modules:
       - appstream-compose --basename=org.gajim.Gajim.Devel.Plugin.url_image_preview --prefix=${FLATPAK_DEST} --origin=flatpak org.gajim.Gajim.Plugin.url_image_preview
     sources:
       - type: archive
-        url: https://ftp.gajim.org/plugins_releases/url_image_preview_2.6.7.zip
-        sha256: 4834d7a69b9221d9e7d5412fbc2a0474ad2232dc45cc82532c92789c12d95068
+        url: https://ftp.gajim.org/plugins_releases/url_image_preview_2.6.8.zip
+        sha256: b9e7afe8ec911f4be2c37d5ce0393c8e7130e12d3d5470480c6b2265bb436ead
       - type: shell
         commands:
           - sed -i "s+org.gajim.Gajim+org.gajim.Gajim.Devel+" org.gajim.Gajim.Plugin.*.metainfo.xml