Update doctrine/dbal requirement from 3.6.* to 3.6.* || 4.0.*

[dependabot[bot]]

Updates the requirements on doctrine/dbal to permit the latest version.

Release notes

Sourced from doctrine/dbal's releases.

4.0.2

Release Notes for 4.0.2

4.0.2

• Total issues resolved: 0
• Total pull requests resolved: 4
• Total contributors: 3

Documentation

• [6340: [Documentation] Fixing markup](doctrine/dbal#6340) thanks to @​ThomasLandauer
• 6339: Remove older versions from the docs thanks to @​SenseException
• [6336: [Documentation] Adding "versionadded"](doctrine/dbal#6336) thanks to @​ThomasLandauer
• 6333: Update UPGRADE.md thanks to @​kalifg

Changes from Lower Branches

• This release contains all changes of the 3.8.4 release.

Commits

• 61d79c6 Merge branch '3.8.x' into 4.0.x
• b05e48a Connection::setNestTransactionsWithSavepoints() should not break lazy connect...
• ad2fee0 [Docs] Update docs regarding "datetimetz" type (#6014)
• 7fb00fd Merge branch '3.8.x' into 4.0.x
• edbf307 Avoid calling deprecated Type::getName() (#6359)
• e2a6621 Ensure correct json default value normalization (#6358)
• 16cfdc8 Merge pull request #6355 from greg0ire/doc-local-tests
• d5d4ed5 Document how to run integration tests locally
• a527330 Remove unused script
• c70bae9 Merge branch '3.8.x' into 4.0.x
• Additional commits viewable in compare view

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