v13.16.0
Add missing void return type to test methods (#56860)
[13.x] Add tests for Attachment::fromUrl() URL scheme validation (#60054)
fix: Add content_id to inline attachment handling in CloudflareTransport (#60330)
[12.x] Ensure mailable HTML assertions properly escape quotes (#58595)
[13.x] Enforce stricter assertions (#59749)
Accept Symfony's new control-characters exception message in mailer test (#60202)
Allow mail default driver to accept enums (#59973)
[13.x] Fix `Message::embed` data attachment handling (#60361)
[12.x] Run Mockery cleanup via PHPUnit subscriber instead of explicit `m::close()` calls (#58278)
[13.x] fix: Queue and Connection attributes in Mailable::queue() and later() (#60328)