Update dependency doctrine/orm to v3.1.2

This MR contains the following updates:

Package	Type	Update	Change
doctrine/orm (source)	require	patch	3.1.1 -> 3.1.2

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Release Notes

doctrine/orm (doctrine/orm)

v3.1.2

Compare Source

Release Notes for 3.1.2

3.1.2

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

Bug

• 11415: Revert "SchemaValidator: Changing mapping of BIGINT to string|int" thanks to @​derrabus
• 11399: SchemaValidator: Changing mapping of BIGINT to string|int thanks to @​ThomasLandauer

Documentation

• 11413: docs: update PHP version in doc thanks to @​Nayte91

Static Analysis

• 11408: Fix fromMappingArray definition thanks to @​VincentLanglet

Changes from Lower Branches

This release contains all changes of the 2.19.4 release.

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