Make debian/trixie debootstrap-able again (#6538)

Ref: Debian Bug report logs - #1069787
Credit: Mark Hindley <leepen@debian.org>

The debian/tests/debian-testing autopkgtest has been broken on 64bit archs by
the t64 transition in trixie. Specifically the test includes gnupg as an
additional package.  Gnupg depends on gpg-agent which depends on
libnpth0. However, in trixie, libnpth0 is now provided by libnpth0t64 which
debootstrap doesn't handle.

I suggest changing the test to include gpgv which avoids the t64 transition
whilst providing similar functional coverage.

config/cli/trixie

@@ -1 +0,0 @@
-bookworm

config/cli/trixie/debootstrap/components

@@ -0,0 +1 @@
+../../common/debootstrap/components.debian

config/cli/trixie/debootstrap/packages

@@ -0,0 +1,5 @@
+apt-utils
+locales
+console-setup
+gpgv
+ca-certificates

config/cli/trixie/main

@@ -0,0 +1 @@
+../common/main