This commit updates ckeditor to 41.3. See changelog at [1].

Executed commands:

    npm install --save \
        @ckeditor/ckeditor5-alignment@^41.3.0 \
        @ckeditor/ckeditor5-autoformat@^41.3.0 \
        @ckeditor/ckeditor5-basic-styles@^41.3.0 \
        @ckeditor/ckeditor5-block-quote@^41.3.0 \
        @ckeditor/ckeditor5-clipboard@^41.3.0 \
        @ckeditor/ckeditor5-code-block@^41.3.0 \
        @ckeditor/ckeditor5-core@^41.3.0 \
        @ckeditor/ckeditor5-editor-classic@^41.3.0 \
        @ckeditor/ckeditor5-engine@^41.3.0 \
        @ckeditor/ckeditor5-essentials@^41.3.0 \
        @ckeditor/ckeditor5-find-and-replace@^41.3.0 \
        @ckeditor/ckeditor5-font@^41.3.0 \
        @ckeditor/ckeditor5-heading@^41.3.0 \
        @ckeditor/ckeditor5-horizontal-line@^41.3.0 \
        @ckeditor/ckeditor5-html-support@^41.3.0 \
        @ckeditor/ckeditor5-indent@^41.3.0 \
        @ckeditor/ckeditor5-link@^41.3.0 \
        @ckeditor/ckeditor5-list@^41.3.0 \
        @ckeditor/...