Update doctrine/orm requirement from ^2.5 to ^2.5 || ^3.0

[dependabot[bot]]

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

Release notes

Sourced from doctrine/orm's releases.

3.1.1

Release Notes for 3.1.1

3.1.1

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

Bug

• 11387: Fixed proxy initialization for EnumReflectionProperty thanks to @​valkars
• 11370: Avoid another occurrence of ArrayAccess thanks to @​greg0ire
• 11368: Avoid array access thanks to @​greg0ire

Documentation

• 11383: Remove older versions from the docs thanks to @​SenseException

Changes from Lower Branches

• This release contains all changes of the 2.19.1 release.
• This release contains all changes of the 2.19.2 release.
• This release contains all changes of the 2.19.3 release.

Commits

• 9c56071 Adjust PHPBench mocks
• 0a1988b Merge branch '2.19.x' into 3.1.x
• 1a5a4c6 Set column length explicitly (#11393)
• 95795c8 Add missing import
• db6e702 Remove unused variable (#11391)
• 4175edf Merge pull request #11387 from valkars/enum-reflection
• 67ac5a8 Fixed proxy initialization for EnumReflectionProperty
• e384978 Remove older versions from the docs (#11383)
• 5ccbc20 [Documentation] Removing "Doctrine Mapping Types" ... (#11384)
• d15624f GH-11185 Bugfix: do not use collection batch loading for indexBy assocation...
• Additional commits viewable in compare view

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[lisachenko]

@dependabot rebase

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