mullvadvpn: update to 2025.9.

Author: dkwo

srcpkgs/mullvadvpn/template

@@ -1,6 +1,6 @@
 # Template file for 'mullvadvpn'
 pkgname=mullvadvpn
-version=2025.8
+version=2025.9
 revision=1
 _wggover=0.0.20230223-mullvad-0.1.6
 # archs set by upstream
@@ -25,7 +25,7 @@ homepage="https://mullvad.net/"
 changelog="https://raw.githubusercontent.com/mullvad/mullvadvpn-app/refs/heads/main/CHANGELOG.md"
 distfiles="https://github.com/mullvad/mullvadvpn-app/archive/refs/tags/${version}.tar.gz
  https://github.com/mullvad/wireguard-go/archive/refs/tags/${_wggover}.tar.gz"
-checksum="cbb1550b2d9d07058f21c80ebce4f9557409fae17d43ae79aea371d3f9de1eae
+checksum="41f5177b620b3ae12867b3fa351e84354b91af9dc0a50369883d8454a9d4aaed
  fd9fa45155098223a17ea934eaa6eb44ee990cd2a7ab638bce482f62fd8502e8"
 skip_extraction="${_wggover}.tar.gz"
 system_accounts="_mullvad"