kdenlive: update to 18.12.0.

[ci skip]

srcpkgs/kdenlive/template

@@ -1,6 +1,6 @@
 # Template file for 'kdenlive'
 pkgname=kdenlive
-version=18.08.3
+version=18.12.0
 revision=1
 build_style=cmake
 hostmakedepends="
@@ -15,7 +15,7 @@ maintainer="johannes <johannes.brechtmann@gmail.com>"
 license="GPL-3.0-or-later"
 homepage="https://kdenlive.org"
 distfiles="${KDE_SITE}/applications/${version}/src/${pkgname}-${version}.tar.xz"
-checksum=587941cccff85ff87063dbb70fe1a67f140fce207a46e35ce136cbf104e35d15
+checksum=978327f841b352d8b879a44b6f1f98eb76b8fb0acb02b9ee1185e277b4bb764a
 
 # needed for mlt to work on musl
 CXXFLAGS="-DHAVE_LOCALE_H=1"