update Nokogiri to v1.15 & doctype model

README.adoc

@@ -68,7 +68,7 @@ item = hit_collection[0].fetch
 [source,ruby]
 ----
 item.to_xml
-=> "<bibitem id="XEP0001" type="standard" schema-version="v1.2.4">
+=> "<bibitem id="XEP0001" type="standard" schema-version="v1.2.5">
       <fetched>2023-07-18</fetched>
       <title format="text/plain" language="en" script="Latn">XMPP Extension Protocols</title>
       ...
@@ -78,7 +78,7 @@ With argument `bibdata: true` it outputs XML wrapped by `bibdata` element and ad
 [source,ruby]
 ----
 item.to_xml bibdata: true
-=> "<bibdata type="standard" schema-version="v1.2.4">
+=> "<bibdata type="standard" schema-version="v1.2.5">
       <fetched>2023-07-18</fetched>
       <title format="text/plain" language="en" script="Latn">XMPP Extension Protocols</title>
       ...

lib/relaton_xsf/hash_converter.rb

@@ -1,11 +1,11 @@
 module RelatonXsf
-  class HashConverter < RelatonBib::HashConverter
-    class << self
-      # @param item_hash [Hash]
-      # @return [RelatonBib::BibliographicItem]
-      def bib_item(item_hash)
-        BibliographicItem.new(**item_hash)
-      end
+  module HashConverter
+    include RelatonBib::HashConverter
+    extend self
+    # @param item_hash [Hash]
+    # @return [RelatonBib::BibliographicItem]
+    def bib_item(item_hash)
+      BibliographicItem.new(**item_hash)
     end
   end
 end

lib/relaton_xsf/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module RelatonXsf
-  VERSION = "1.16.2"
+  VERSION = "1.17.0"
 end

relaton_xsf.gemspec

@@ -37,7 +37,7 @@ Gem::Specification.new do |spec|
   # spec.add_dependency "example-gem", "~> 1.0"
 
   spec.add_dependency "mechanize", "~> 2.8.0"
-  spec.add_dependency "relaton-bib", "~> 1.16.0"
+  spec.add_dependency "relaton-bib", "~> 1.17.0"
   spec.add_dependency "relaton-index", "~> 0.2.0"
 
   # For more information and examples about making a new gem, check out our

spec/fixtures/bibdata.xml

@@ -1,5 +1,5 @@
-<bibdata type="standard" schema-version="v1.2.4">
-  <fetched>2023-07-18</fetched>
+<bibdata type="standard" schema-version="v1.2.5">
+  <fetched>2023-11-08</fetched>
   <title format="text/plain" language="en" script="Latn">XMPP Extension Protocols</title>
   <uri type="src">http://xmpp.org/extensions/xep-0001.html</uri>
   <docidentifier type="XEP" primary="true">XEP 0001</docidentifier>
@@ -14,7 +14,7 @@
       <name>
         <completename language="en">Peter Saint-Andre</completename>
       </name>
-      <email>xsf@stpeter.im</email>
+      <email>stpeter@stpeter.im</email>
     </person>
   </contributor>
   <contributor>