Update CKEditor 4 to 4.21.0

This will be backported to the contrib too?

@smustgrave See the linked issue.

Fixing attribution.

I reran the build and didn't get the same result.

Here's the steps I took

# Commands run on local
git clone git@github.com:ckeditor/ckeditor4.git
cd ckeditor4
git checkout 4.21.0
cp /PATH/TO/CORE/core/assets/vendor/ckeditor/buid-config.js ./dev/builder
docker run -v `pwd`:/data --rm -it openjdk:15 bash
# Commands run inside docker container
microdnf install bc git
git config --global --add safe.directory /data
./dev/builder/build.sh
# Commands run on local
cd /PATH/TO/CORE/core/assets/vendor
tar -xzvf /PATH/TO/ckeditor4/dev/builder/release/ckeditor_4.21.0.tar.gz 
cd /PATH/TO/CORE
# Manually edit core/core.libraries.yml
git add core/core.libraries.yml
git add core/assets/vendor/ckeditor -f

What did I miss?

Here's the interdiff between my 9.5 build and longwave's the 9.4 one is similar

Ok, worked out the difference, the .tar.gz has all the plugins, the zip is your specific build.

After using that, or the release/ckeditor file I only get a different timestamp.

Going to commit this

I'll update the docs re where the 'release' actually is (ie its not the .tar.gz)

larowlan → credited jbogdanski → .

larowlan → credited Wim Leers → .

larowlan → credited xjm → .

Committed to 9.5.x and 9.4.x and updated the ckeditor building docs →

Automatically closed - issue fixed for 2 weeks with no activity.