Bug#1089724: libphp-swiftmailer: autopkgtest failure with php8.4

[Bas Couwenberg]

Source: libphp-swiftmailer
Version: 6.3.0-6
Severity: serious
Justification: autopkgtest failure

Dear Maintainer,

The autopkgtest of your package fail with php8.4:

https://ci.debian.net/packages/libp/libphp-swiftmailer/testing/amd64/55200111/