xfce4-whiskermenu-plugin: upgrade 2.4.6 -> 2.5.1

Release notes for 2.5.1
=======================
- Fix not always using new action icons. (Issue openembedded#33)

Release notes for 2.5.0
=======================
- Add option to show all applications by default. (Issue openembedded#4)
- Rearrange sidebar buttons to match default category. (Issue openembedded#9)
- Show panel button title as tooltip in icon-only mode. (Issue openembedded#12)
- Always sort top-level categories.
- Vertically center contents of header.
- Use new Xfce action icons.
- Use new desktop ids for default programs.
- Rewrite to hide menu on focus out.
- Refactor code to use new Xfce functions.
- Refactor building translations.
- Translation updates: Bulgarian, Chinese (China), Chinese (Taiwan),
  Croatian, Czech, Danish, Dutch, Esperanto, French, Galician,
  German, Italian, Korean, Lithuanian, Malay, Polish, Portuguese,
  Portuguese (Brazil), Slovak, Spanish, Swedish, Turkish.

Signed-off-by: Andreas Müller <[email protected]>
Signed-off-by: Khem Raj <[email protected]>

meta-xfce/recipes-panel-plugins/whiskermenu/xfce4-whiskermenu-plugin_2.4.6.bb → meta-xfce/recipes-panel-plugins/whiskermenu/xfce4-whiskermenu-plugin_2.5.1.bb

@@ -5,7 +5,6 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=b234ee4d69f5fce4486a80fdaf4a4263"
 
 inherit xfce-panel-plugin cmake
 
-SRC_URI[md5sum] = "81a4a4c7635273485fac5c2d98e48d02"
-SRC_URI[sha256sum] = "8974d38cc87df528693efe4b6e14bcd233cdb49d2018a23ddddf745110b25744"
+SRC_URI[sha256sum] = "b2074f8a9caa766e2d97f0b960ef2f4d1e20dd804497229bc1f0157791896925"
 
 RRECOMMENDS_${PN} += "menulibre"