testing/kcrash: use xvfb-run to run kcrashtest test

Closes GH-8417

testing/kcrash/APKBUILD

@@ -9,6 +9,7 @@ url="https://community.kde.org/Frameworks"
 license="LGPL-2.1-or-later"
 depends_dev="kcoreaddons-dev kwindowsystem-dev"
 makedepends="$depends_dev extra-cmake-modules doxygen qt5-qttools-dev"
+checkdepends="xvfb-run"
 source="https://download.kde.org/stable/frameworks/${pkgver%.*}/$pkgname-$pkgver.tar.xz"
 subpackages="$pkgname-dev $pkgname-doc"
 
@@ -22,8 +23,7 @@ build() {
 }
 
 check() {
-	# kcrashtest requires X11 to be running
-	CTEST_OUTPUT_ON_FAILURE=TRUE ctest -E '(kcrashtest)'
+	CTEST_OUTPUT_ON_FAILURE=TRUE xvfb-run ctest
 }
 
 package() {