testing/*: fix missing libclang dependency

testing/postgresql-pg_later/APKBUILD

@@ -3,7 +3,7 @@
 pkgname=postgresql-pg_later
 _projname=pg_later
 pkgver=0.0.14
-pkgrel=0
+pkgrel=1
 pkgdesc="PostgreSQL extension to execute SQL now and get the results later"
 url="https://github.com/tembo-io/pg_later"
 # s390x: fails to build nix crate
@@ -13,6 +13,7 @@ license="PostgreSQL"
 makedepends="
 	cargo
 	chrpath
+	clang16-libclang
 	jq
 	openssl-dev
 	postgresql

testing/postgresql-pgmq/APKBUILD

@@ -2,7 +2,7 @@
 # Maintainer: Jakub Jirutka <jakub@jirutka.cz>
 pkgname=postgresql-pgmq
 pkgver=1.1.1
-pkgrel=0
+pkgrel=1
 pkgdesc="A lightweight message queue, like AWS SQS and RSMQ, but on PostgreSQL"
 url="https://github.com/tembo-io/pgmq"
 # loongarch64: blocked by libc crate
@@ -11,6 +11,7 @@ license="PostgreSQL"
 makedepends="
 	cargo
 	chrpath
+	clang16-libclang
 	jq
 	openssl-dev
 	postgresql