DBAL-1213: [GH-843] fix TypeHinting for method parameter 'convertToPHPValueSQL'

[doctrinebot]

Jira issue originally created by user @doctrinebot:

This issue is created automatically through a Github pull request on behalf of KNone:

Url: #843

Message:

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-843] was assigned:
#843

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-843] was closed:
#843

[doctrinebot]

Comment created by @Ocramius:

Closing since it is a BC break

[doctrinebot]

Issue was closed with resolution "Can't Fix"

[github-actions]

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