Bump symfony/http-foundation from 2.7.6 to 2.7.51

[dependabot[bot]]

Bumps symfony/http-foundation from 2.7.6 to 2.7.51.

Commits

• b67e5cb security #cve-2019-10913 [HttpFoundation] reject invalid method override (nic...
• e8eb43e [2.7] Make CI green
• b045094 [HttpFoundation] Remove support for legacy and risky HTTP headers
• c47d542 bug #27359 [HttpFoundation] Fix perf issue during MimeTypeGuesser intializati...
• 92f35ae [HttpFoundation] Fix perf issue during MimeTypeGuesser intialization
• 59d936e [HttpFoundation] Break infinite loop in PdoSessionHandler when MySQL is in lo...
• eff0bf4 #27250 limiting GET_LOCK key up to 64 char due to changes in MySQL 5.7.5 and ...
• da48c21 [Filesystem] Fix usages of error_get_last()
• 9f01f9b Fixed return type
• 2d67129 use brace-style regex delimiters
• Additional commits viewable in compare view

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