Bump import QtWebEngine 1.4

Change-Id: Ic2261be6540b592edf38f721a82b631a5f1ffd95
Reviewed-by: Michal Klocek <michal.klocek@qt.io>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>

src/webengine/doc/src/qtwebengine-qmlmodule.qdoc

@@ -24,7 +24,7 @@
 */
 
 /*!
-    \qmlmodule QtWebEngine 1.3
+    \qmlmodule QtWebEngine 1.4
     \title Qt WebEngine QML Types
     \brief Provides QML types for rendering web content within a QML application
     \ingroup qtwebengine-qmlmodules
@@ -33,7 +33,7 @@
     your .qml file:
 
     \badcode
-    import QtWebEngine 1.3
+    import QtWebEngine 1.4
     \endcode
 
     To link against the module, add the following QT variable to your qmake .pro

src/webengine/plugin/plugin.pro

 CXX_MODULE = qml
 TARGET = qtwebengineplugin
 TARGETPATH = QtWebEngine
-IMPORT_VERSION = 1.3
+IMPORT_VERSION = 1.4
 
 QT += webengine qml quick
 QT_PRIVATE += webengine-private