bug #18265 Update dependencies of the docs builder used in tests (javiereguiluz)

This PR was merged into the 5.4 branch.

Discussion
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Update dependencies of the docs builder used in tests

This is needed to fix this bug: https://github.com/symfony-tools/docs-builder/releases/tag/v0.20.5

Commits
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3637cf9 Update dependencies of the docs builder used in tets

Author: javiereguiluz