net-libs/libpsl: Sync with Gentoo

It's from Gentoo commit 2b670ebb73327bcec92b0106d86abf76e7fab4d9.

sdk_container/src/third_party/portage-stable/net-libs/libpsl/libpsl-0.21.5.ebuild

@@ -13,7 +13,7 @@ SRC_URI="https://github.com/rockdaboot/${PN}/releases/download/${PV}/${P}.tar.gz
 LICENSE="MIT"
 SLOT="0"
 KEYWORDS="~alpha amd64 arm arm64 hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
-IUSE="icu +idn test"
+IUSE="icu +idn test static-libs"
 RESTRICT="!test? ( test )"
 
 RDEPEND="
@@ -58,5 +58,11 @@ multilib_src_configure() {
 		)
 	fi
 
+	if use static-libs ; then
+		emesonargs+=(
+			-Ddefault_library=both
+		)
+	fi
+
 	meson_src_configure
 }