xfce4-panel: update to 4.18.4.

srcpkgs/xfce4-panel/template

@@ -1,6 +1,6 @@
 # Template file for 'xfce4-panel'
 pkgname=xfce4-panel
-version=4.18.3
+version=4.18.4
 revision=1
 build_style=gnu-configure
 build_helper="gir"
@@ -15,7 +15,7 @@ maintainer="Đoàn Trần Công Danh <congdanhqx@gmail.com>"
 license="GPL-2.0-or-later"
 homepage="https://docs.xfce.org/xfce/xfce4-panel/start"
 distfiles="https://archive.xfce.org/src/xfce/$pkgname/${version%.*}/$pkgname-$version.tar.bz2"
-checksum=4ae0b8615c9811194bbda0172a63567ed7fdb5519ea48f7a4637f4e6e5365e1b
+checksum=32304f82094ea3779741f968dc851032d8790eb78f3aa01676520b96cfacfb54
 
 # Package build options
 build_options="gir"