profiles/base: change to PHP_TARGETS="php8-1"

Needed for OpenSSL 3. As noted in the PR, php7-4 is EOL and 8-0 is security-support
only, so let's zoom ahead to solely 8-1.

Bug: https://bugs.gentoo.org/797676
Closes: #31579
Signed-off-by: Sam James <sam@gentoo.org>

profiles/base/make.defaults

@@ -168,7 +168,7 @@ POSTGRES_TARGETS="postgres12 postgres13"
 # Moreover, it should only contain targets that have a stable version
 # of PHP, to avoid pulling in an unstable PHP on stable systems.
 #
-PHP_TARGETS="php7-4 php8-0"
+PHP_TARGETS="php8-1"
 
 # Alfredo Tupone <tupone@gentoo.org> (2022-11-16)
 #