mousepad: update to 0.5.6.

Also:
- replace gtksourceview-devel with gtksourceview4-devel in makedepends.

Closes: #32277 [via git-merge-pr]

srcpkgs/mousepad/template

@@ -1,11 +1,11 @@
 # Template file for 'mousepad'
 pkgname=mousepad
-version=0.5.5
+version=0.5.6
 revision=1
 build_style=gnu-configure
 configure_args="--with-locales-dir=/usr/share/locale"
 hostmakedepends="glib-devel intltool pkg-config"
-makedepends="gtksourceview-devel gspell-devel"
+makedepends="gtksourceview4-devel gspell-devel"
 depends="desktop-file-utils hicolor-icon-theme"
 short_desc="Simple text editor for Xfce based on Leafpad"
 maintainer="mobinmob <mobinmob@disroot.org>"
@@ -13,4 +13,4 @@ license="GPL-2.0-or-later"
 homepage="https://xfce.org/"
 changelog="https://gitlab.xfce.org/apps/mousepad/-/raw/master/NEWS"
 distfiles="https://archive.xfce.org/src/apps/${pkgname}/${version%.*}/${pkgname}-${version}.tar.bz2"
-checksum=40c35f00e0e10df50a59bd0dbba9007d2fb5574ed8a2aa73b0fc5ef40e64abe1
+checksum=42559863b01d89bd21136beea0a1461530377fabc6553bdfe14399d55596350f