pdns: 4.8.4 -> 4.9.0

Changelog: https://doc.powerdns.com/authoritative/changelog/4.9.html#change-4.9.0
Upgrade Notes: https://doc.powerdns.com/authoritative/upgrading.html#to-4-9-0

nixos/doc/manual/release-notes/rl-2405.section.md

···
 
 - The `power.ups` module now generates `upsd.conf`, `upsd.users` and `upsmon.conf` automatically from a set of new configuration options. This breaks compatibility with existing `power.ups` setups where these files were created manually. Back up these files before upgrading NixOS.
 
+- `pdns` was updated to version [v4.9.x](https://doc.powerdns.com/authoritative/changelog/4.9.html), which introduces breaking changes. Check out the [Upgrade Notes](https://doc.powerdns.com/authoritative/upgrading.html#to-4-9-0) for details.
+
 - `unrar` was updated to v7. See [changelog](https://www.rarlab.com/unrar7notes.htm) for more information.
 
 - `k9s` was updated to v0.31. There have been various breaking changes in the config file format,

pkgs/servers/dns/pdns/default.nix

···
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "pdns";
-  version = "4.8.4";
+  version = "4.9.0";
 
   src = fetchurl {
     url = "https://downloads.powerdns.com/releases/pdns-${finalAttrs.version}.tar.bz2";
-    hash = "sha256-f0DIy8RlDQb+Sau6eZAuurs4Q2Pau9XO8nGWSgfDZFw=";
+    hash = "sha256-/h1UM8iERu1w2TFgXG7Dd9qZg5xOFRuQtxqiEb1u6pI=";
   };
   # redact configure flags from version output to reduce closure size
   patches = [ ./version.patch ];