xfce4-panel: upgrade 4.18.4 -> 4.18.5

Change log found at https://gitlab.xfce.org/xfce/xfce4-panel/-/tags/xfce4-panel-4.18.5

- pager: Do not adapt upper value of spin button in viewport mode
- pager: Update workspace layout also on window manager change
- pager: Fix aspect ratio for viewport (V2)
- actions: Fix memory leak
- pager: Delay GdkScreen signal handlers
- panel: Do not scale background image when UI scale > 1
- popup-command: Do not block autohide when popped up at pointer
- Fix memory leaks when using gtk_css_provider_new()
- panel: Clear item list before repopulating item dialog
- panel: Remove autosave timer for plugins
- wrapper: Really ensure we don't call gtk_main_quit() twice
- panel: Block autohide when the panel has input focus
- clock: Fix sync timeout for seconds display
- clock: Implement ConsoleKit sleep monitor
- Add/Sharpen icons at 48-128px
- Adjust 32px icon margins, new separator icon
- Sharpen icons at 16px and 32px
- Increase margins for 24px icons
- Make 24px icons sharper
- icons: Fix wrong exported sizes
- Translation Updates:
  Basque, Catalan, Danish, Estonian, French, Italian, Kazakh, Polish,
  Russian, Slovenian, Spanish

Signed-off-by: Jason Schonberg <schonm@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
(cherry picked from commit 48d82c20c49a58069aea7c5b825f2f615b7ae966)
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-xfce/recipes-xfce/xfce4-panel/xfce4-panel_4.18.5.bb

@@ -14,7 +14,7 @@ SRC_URI += " \
     file://0001-windowmenu-do-not-display-desktop-icon-when-no-windo.patch \
     file://0002-use-lxdm-to-replace-dm-tool.patch \
 "
-SRC_URI[sha256sum] = "32304f82094ea3779741f968dc851032d8790eb78f3aa01676520b96cfacfb54"
+SRC_URI[sha256sum] = "b20e0d10cc5149a601d8eee07373efb446ea3e179dd032ed8ddb5782e3f9e7cb"
 
 EXTRA_OECONF += "--disable-vala"