waifu2x-converter-cpp: rebuild for opencv-4.6.0, fix tests

srcpkgs/waifu2x-converter-cpp/template

@@ -1,7 +1,7 @@
 # Template file for 'waifu2x-converter-cpp'
 pkgname=waifu2x-converter-cpp
 version=5.2.4
-revision=1
+revision=2
 build_style=cmake
 configure_args="-DINSTALL_MODELS=ON"
 hostmakedepends="pkg-config"
@@ -26,6 +26,10 @@ pre_configure() {
 	cc -o build/conv conv.c
 }
 
+pre_check() {
+	cp -r models_rgb build
+}
+
 post_install() {
 	vlicense LICENSE
 }