Added package/ckeditor-fakeobjects in repositories

[gargsuchi]

When trying to install tide locally, composer gives this error:

• dpc-sdp/tide_core 2.0.4 requires ckeditor/fakeobjects ^4.5.11 -> no matching package found

This PR fixes the error.

[barbun]

@gargsuchi good stuff :)

It seems that the PR pins the package version to 4.5.11, all while composer.json constrains it only to non-breaking updates ^4.5.11. I am not sure how critical this is but it is probably a good practice to stick to non-breaking updates, especially when other packages are also set to use version range.

From here, I guess there's at least 2 options:

• Lock the version in composer.json to 4.5.11
• Switch to "drupal-ckeditor-libraries-group/fakeobjects": "^4.5.11" which seems to be mirroring CKEditor updates.

[barbun]

Enhanced on this in #229. I reckon this PR can be closed then :)

[gargsuchi]

Closing in favour of #229 @barbun