Problem: citus won't build

Solution: correct the dependencies and build process

Also, mark it as broken on Postgres above 16, as it isn't supported yet.
(See citusdata/citus#7708)

packages/citus.rb

@@ -2,4 +2,21 @@
 
 class Citus < Pgpm::Package
   github "citusdata/citus"
+
+  def build_steps
+    ["./configure"] + super
+  end
+
+  def build_dependencies
+    super + %w[libcurl-devel lz4-devel libzstd-devel openssl-devel krb5-devel]
+  end
+
+  def dependencies
+    super + %w[libcurl lz4 libzstd openssl krb5-libs]
+  end
+
+  def broken?
+    # https://github.com/citusdata/citus/issues/7708
+    Pgpm::Postgres::Distribution.in_scope.major_version > 16
+  end
 end