Bump symfony/http-kernel from 5.1.3 to 5.1.5

[dependabot[bot]]

Bumps symfony/http-kernel from 5.1.3 to 5.1.5.

Release notes

Sourced from symfony/http-kernel's releases.

v5.1.5

Changelog (https://github.com/symfony/http-kernel/compare/v5.1.4...v5.1.5)

• no changes

v5.1.4

Changelog (https://github.com/symfony/http-kernel/compare/v5.1.3...v5.1.4)

• bug #37841 Backport handler lock when using VAR_DUMPER_FORMAT (ogizanagi)

Commits

• 3e32676 Update VERSION for 5.1.5
• f855601 Merge branch '4.4' into 5.1
• cdf1e9b security #cve-2020-15094 Remove headers with internal meaning from HttpClient...
• 8e8d0ed Remove headers with internal meaning from HttpClient responses
• 05293dd Bump Symfony version to 5.1.5
• f829c24 Update VERSION for 5.1.4
• a5ed890 Bump Symfony version to 4.4.13
• f93f6b3 Update VERSION for 4.4.12
• 794f3d4 Merge branch '4.4' into 5.1
• 98fb210 minor #37831 stop using deprecated PHPUnit APIs (xabbuh)
• Additional commits viewable in compare view

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