Changelog (v7.4.19...v7.4.20)
- minor #66430 Fix the description of an empty webhook routing secret (@nicolas-grekas)
- bug #66359 Disable HTTP/2 push on the default HTTP client (@Amoifr)
- bug #66220 Fix DotenvVault corrupting a value that contains a back-reference (@lazerg)
- bug #66137 Cache the serializer metadata in debug mode when it comes from mapping files (@nicolas-grekas)