Release 2026.9.24

Carries upstream 0.16.23 -- the DSN, POP3, Sieve, DMARC-report, ACME and
DNSSEC-resolver fixes in its own change log -- with the files it changed
marked under AGPL section 5(a), and one upstream test dropped that the fork's
routing makes meaningless.

It is also the first release whose tag attaches binaries: a host install can
now fetch inbuxa-linux-amd64.tar.gz or inbuxa-linux-arm64.tar.gz instead of
pulling the image and copying the file out of it.

crates/types/src/branding.rs

@@ -71,7 +71,7 @@ pub fn env_var(name: &str) -> Result<String, std::env::VarError> {
 #[macro_export]
 macro_rules! brand_version {
     () => {
-        "2026.9.23"
+        "2026.9.24"
     };
 }