Use dynamic imports to fix issues in the release process

[pomek]

Suggested merge commit message (convention)

Internal: Use dynamic imports to fix issues in the release process. Closes #364.

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Additional information

Testing steps

• I modified the latest changelog version (patch bump).
• rm -rf release/; yarn release:prepare-packages --branch i/364; cat release/ckeditor5-vue/package.json | grep version

   yarn run v1.22.19
   $ node ./scripts/preparepackages.js --branch i/364
   ✔ Verifying the repository.
   ✔ Updating the `#version` field.
   ✔ Running build command.
   ✔ Creating the `ckeditor5-vue` package in the release directory.
   ✔ Cleaning-up.
   ✔ Commit & tag.
   Done in 4.70s.
     "version": "7.3.1",
  

To clean-up:

git tag -d v7.3.1
git reset --hard HEAD~1

[coveralls]

Pull Request Test Coverage Report for Build 0a773281-c8d4-4011-a382-ff0cc9728590

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 24d21d4c-ff7a-43fb-9037-a9b25699bdca:	0.0%
Covered Lines:	84
Relevant Lines:	84

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💛 - Coveralls