package/qt5/qt5webengine-chromium: bump version after qtwebengine bump

In commit ca9e08277c473de1d0119768661ce0ba96559a7a ("package/qt5: bump
packages to latest kde submodule versions"), the version of Qt5 was
bumped to 5.15.14. This means that the version of qt5webengine being
built is now qtwebengine-v5.15.14-lts.tar.bz2.

However, qt5webengine-chromium is packaging a submodule of
qtwebengine, so we must keep them in sync, and therefore it should
have been updated.

The current version of qt5webengine-chromium,
0ad2814370799a2161057d92231fe3ee00e2fe98, was matching with
5.15.11-lts, but for 5.15.14-lts, we need to use
18c9261dc5b8aa57a0bdd5b62ce6f648cca1ef5e, as can be seen at:

  https://github.com/qt/qtwebengine/tree/v5.15.14-lts/src (thirdparty submodule)

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/qt5/qt5webengine-chromium/qt5webengine-chromium.hash

@@ -1,5 +1,5 @@
 # Locally calculated
-sha256  14c0654d046fd1faf0204b79e33c091012a8f4df972777e5691875aa75d29a65  qtwebengine-chromium-0ad2814370799a2161057d92231fe3ee00e2fe98.tar.bz2
+sha256  fb0953b0cc7b980f128d5f66b8345eb4fbf2e05b70db3926958fb657953b64dc  qtwebengine-chromium-18c9261dc5b8aa57a0bdd5b62ce6f648cca1ef5e.tar.bz2
 
 # Locally calculated with:
 # for i in $(find * -type f \( -iname 'license*' -o -iname 'copying*' -o -name 'APPLE_LICENSE' -o -name 'Copyright' -o -path '*/license_texts/*' -o -path '*/licenses/*' \) -a -not -name '*.cc' -not -name '*.py' -not -name '*.pyc' -not -name '*.h' -not -name 'LICENSE.sha1' -not -name 'licensecheck.pl*' -not -name 'license.after' -not -name 'license.before' -not -path 'chromium/third_party/catapult/*') ; do echo -n "sha256  " ; sha256sum $i ; done | sort --key=3

package/qt5/qt5webengine-chromium/qt5webengine-chromium.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-QT5WEBENGINE_CHROMIUM_VERSION = 0ad2814370799a2161057d92231fe3ee00e2fe98
+QT5WEBENGINE_CHROMIUM_VERSION = 18c9261dc5b8aa57a0bdd5b62ce6f648cca1ef5e
 QT5WEBENGINE_CHROMIUM_SITE = $(QT5_SITE)/qtwebengine-chromium/-/archive/$(QT5WEBENGINE_CHROMIUM_VERSION)
 QT5WEBENGINE_CHROMIUM_SOURCE = qtwebengine-chromium-$(QT5WEBENGINE_CHROMIUM_VERSION).tar.bz2
 QT5WEBENGINE_CHROMIUM_PATCH_DEPENDENCIES = qt5webengine-chromium-catapult