upgpkg: 2.9.21-2: Switch to fully used system user

.SRCINFO

 pkgbase = apt
 	pkgdesc = Command-line package manager used on Debian-based systems
 	pkgver = 2.9.21
-	pkgrel = 1
+	pkgrel = 2
 	url = https://salsa.debian.org/apt-team/apt
 	arch = x86_64
 	license = BSD-3-Clause
@@ -38,8 +38,8 @@ pkgbase = apt
 	source = apt-tmpfiles.conf
 	validpgpkeys = AEE1C8AAAAF0B7684019C546021B361B6B031B00
 	sha256sums = d80803d2f0aa12a293677e77d33fec6d3e737302c84800ac17f03dc90e9483f1
-	sha256sums = f4528114112f05ce7e78d5b64e77d20053a6ce29a59588345985be7335cf63d6
-	sha256sums = 424ca4feab152d7f5ce73a2ddd29bcd3e482cfe1c96cffb969d7542d19da0455
+	sha256sums = 1a24e961c28ff9e7eca726db0b6255ec4fbd2d8957fa17bc365216f022a9a482
+	sha256sums = 151f5d733908aff89507496d114014f55b6ddacd45f701fc26c846b5e1061122
 
 pkgname = apt
 	pkgdesc = Command-line package manager used on Debian-based systems

PKGBUILD

@@ -10,7 +10,7 @@
 pkgbase=apt
 pkgname=('apt' 'apt-docs')
 pkgver=2.9.21
-pkgrel=1
+pkgrel=2
 pkgdesc='Command-line package manager used on Debian-based systems'
 arch=('x86_64')
 url='https://salsa.debian.org/apt-team/apt'
@@ -32,8 +32,8 @@ source=("git+https://salsa.debian.org/apt-team/apt.git?signed#tag=${pkgver}"
         "apt-sysusers.conf"
         "apt-tmpfiles.conf")
 sha256sums=('d80803d2f0aa12a293677e77d33fec6d3e737302c84800ac17f03dc90e9483f1'
-            'f4528114112f05ce7e78d5b64e77d20053a6ce29a59588345985be7335cf63d6'
-            '424ca4feab152d7f5ce73a2ddd29bcd3e482cfe1c96cffb969d7542d19da0455')
+            '1a24e961c28ff9e7eca726db0b6255ec4fbd2d8957fa17bc365216f022a9a482'
+            '151f5d733908aff89507496d114014f55b6ddacd45f701fc26c846b5e1061122')
 validpgpkeys=('AEE1C8AAAAF0B7684019C546021B361B6B031B00') # Julian Andres Klode <jak@debian.org>
 
 build() {

apt-sysusers.conf

-u _apt - "APT account for owning persistent & cache data" /var/lib/apt -
+u! _apt - "APT account for owning persistent & cache data" /var/lib/apt -