Update doctrine/annotations requirement from ^1.13 to ^2.0

[dependabot[bot]]

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

Release notes

Sourced from doctrine/annotations's releases.

2.0.0

Release Notes for 2.0.0

Backwards incompatible release (major)

2.0.0

• Total issues resolved: 0
• Total pull requests resolved: 6
• Total contributors: 2

BC-Break

• 471: Remove deprecated method thanks to @​greg0ire

• 470: Remove NamedArgumentConstructorAnnotation interface thanks to @​derrabus

• 469: Remove SimpleAnnotationReader thanks to @​derrabus

• 468: Remove deprecated APIs thanks to @​greg0ire

• 467: Add parameter type declarations thanks to @​greg0ire

• 466: Allow doctrine/lexer 3 thanks to @​greg0ire

Commits

• d02c9f3 Merge pull request #471 from greg0ire/drop-deprecated-method
• 7a95b3b Remove deprecated method
• 455db74 Remove NamedArgumentConstructorAnnotation interface (#470)
• 9dc2866 Remove SimpleAnnotationReader (#469)
• 4919d49 Merge pull request #466 from greg0ire/allow-lexer-3
• c03bc8b Allow doctrine/lexer 3
• 96c1475 Merge pull request #467 from greg0ire/param-type-declarations
• 5ccddc6 Bump PHP to 7.2
• 6d49292 Remove deprecated APIs (#468)
• e29955f Merge pull request #465 from greg0ire/drop-lexer-1
• Additional commits viewable in compare view

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