docs: database version support info

[sushantdhiman]

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• Does npm run test or npm run test-DIALECT pass with this change (including linting)?
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Description of change

Adding support information related to database versions as starter.

[SimonSchick]

@sushantdhiman can we just slap a retry on this test?

[sushantdhiman]

@SimonSchick I'll take a look at this tomorrow probably, if can't find anything useful we can use retry

[sushantdhiman]

@SimonSchick row locking test shouldn't bother us now #12174