Update pacman.conf for pacman 7

Add new options from
https://gitlab.archlinux.org/archlinux/packaging/packages/pacman/-/blob/main/pacman.conf

CHANGELOG.rst

@@ -16,6 +16,7 @@ Changed
 - Use an empty UUID for the EROFS image file since the file system will never be referenced by it.
 - Do not use ``mkfs.erofs`` extended options ``fragments`` and ``dedupe`` in the baseline profile. This reduces the EROFS
   image size and compression time.
+- Update profile ``pacman.conf`` to include the new options added to ``/etc/pacman.conf`` in pacman 7.0.0.r3.g7736133-1.
 
 Deprecated
 ----------

configs/baseline/pacman.conf

@@ -36,6 +36,8 @@ Architecture = auto
 #CheckSpace
 #VerbosePkgLists
 ParallelDownloads = 5
+DownloadUser = alpm
+#DisableSandbox
 
 # By default, pacman accepts packages signed by keys that its local keyring
 # trusts (see pacman-key and its man page), as well as unsigned packages.

configs/releng/pacman.conf

@@ -36,6 +36,8 @@ Architecture = auto
 #CheckSpace
 #VerbosePkgLists
 ParallelDownloads = 5
+DownloadUser = alpm
+#DisableSandbox
 
 # By default, pacman accepts packages signed by keys that its local keyring
 # trusts (see pacman-key and its man page), as well as unsigned packages.