Bump doctrine/dbal from 3.0.0 to 3.1.3

[ChristophWurst]

• Bump doctrine/dbal from 3.0.0 to 3.1.3 3rdparty#837
• rebase

Let's see what CI thinks of this, but we're possibly in a safer position if we ship 23 with the latest fixes and compatibility in the database world.

[CarlSchwan]

The ci is not happy. First, one is very probably related to this change

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There was 1 failure:

1. Test\DB\QueryBuilder\QueryBuilderTest::testFirstResult with data set #0 (null, array(99, 98, 97, 96, 95, 94, 93, 92, 91))
   Failed asserting that 0 is identical to null.

/home/runner/work/server/server/tests/lib/DB/QueryBuilder/QueryBuilderTest.php:132

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There was 1 risky test:

1. Test\Files\Node\FolderTest::testGet
   This test did not perform any assertions

/home/runner/work/server/server/tests/lib/Files/Node/FolderTest.php:89

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[ChristophWurst]

1. Test\DB\QueryBuilder\QueryBuilderTest::testFirstResult with data set #0 (null, array(99, 98, 97, 96, 95, 94, 93, 92, 91))
   Failed asserting that 0 is identical to null.

Fixed. Doctrine changed its behavior and now always truly returns 0 instead of null.