v5.3.12

Changelog (v5.3.11...v5.3.12)

• security #cve-2021-41268 [SecurityBundle] Default signature_properties to the previous behavior (@wouterj)
• security #cve-2021-41267 [HttpKernel] Fix missing extra trusted header in sub-request (@jderusse)
• security #cve-2021-41270 [Serializer] Use single quote to escape formulas (@jderusse)
• bug #44232 [Cache] fix connecting to local Redis sockets (@nicolas-grekas)
• bug #44204 [HttpClient] fix closing curl multi handle when destructing client (@nicolas-grekas)
• bug #44208 [Process] exclude argv/argc from possible default env vars (@nicolas-grekas)

[PR] #44243
[SECURITY] Security release