kcharselect: update to 21.12.2.

Also:
- add changelog

srcpkgs/kcharselect/template

@@ -1,6 +1,6 @@
 # Template file for 'kcharselect'
 pkgname=kcharselect
-version=21.12.0
+version=21.12.2
 revision=1
 build_style=cmake
 hostmakedepends="extra-cmake-modules kcoreaddons gettext"
@@ -9,8 +9,9 @@ short_desc="Character Selector"
 maintainer="travankor <travankor@tuta.io>"
 license="GPL-2.0-or-later"
 homepage="https://kde.org/applications/en/utilities/org.kde.kcharselect"
+changelog="https://kde.org/announcements/changelogs/gear/${version}/#kcharselect"
 distfiles="${KDE_SITE}/release-service/${version}/src/kcharselect-${version}.tar.xz"
-checksum=7a8e919f78e4d092337b9975eeea26e5c3107ab9eabe588b0c4be7550dd17ed9
+checksum=35e3a75380e335a811fc50ae6fa7e920968655e3aeeffbc12e54d0cc4fb4f3b3
 
 if [ "$CROSS_BUILD" ]; then
 	hostmakedepends+=" kdoctools python3 qt5-host-tools qt5-qmake"