Update standards version to 4.6.0, no changes needed.

Changes-By: lintian-brush
Fixes: lintian: out-of-date-standards-version
See-also: https://lintian.debian.org/tags/out-of-date-standards-version.html

debian/control

@@ -5,7 +5,7 @@ Maintainer: Debian PHP PEAR Maintainers <pkg-php-pear@lists.alioth.debian.org>
 Uploaders: Prach Pongpanich <prach@debian.org>,
            Guilhem Moulin <guilhem@debian.org>
 Build-Depends: debhelper-compat (= 13), pkg-php-tools (>= 1.32)
-Standards-Version: 4.5.1
+Standards-Version: 4.6.0
 Homepage: https://pear.php.net/package/Net_Socket
 Vcs-Git: https://salsa.debian.org/php-team/pear/php-net-socket.git -b debian/latest
 Vcs-Browser: https://salsa.debian.org/php-team/pear/php-net-socket