deps: Update YamlDotNet version to 18.1.0

Directory.Packages.props

@@ -19,7 +19,7 @@
     <PackageVersion Include="Spectre.Console.Cli" Version="0.55.0" />
     <PackageVersion Include="Stubble.Core" Version="1.10.8" />
     <PackageVersion Include="System.Composition" Version="10.0.12" />
-    <PackageVersion Include="YamlDotNet" Version="16.3.0" />
+    <PackageVersion Include="YamlDotNet" Version="18.1.0" />
   </ItemGroup>
 
   <ItemGroup>

src/Docfx.YamlSerialization/TypeInspectors/ExtensibleTypeInspectorSkeleton.cs

@@ -64,4 +64,8 @@ public IPropertyDescriptor GetProperty(Type type, object? container, string name
     public abstract string GetEnumName(Type enumType, string name);
 
     public abstract string GetEnumValue(object enumValue);
+
+    public bool HasParseMethod(Type type) => false;
+
+    public object? Parse(string value, Type expectedType) => throw new NotImplementedException();
 }

src/Docfx.YamlSerialization/YamlDeserializer.cs

@@ -65,6 +65,10 @@ public string GetEnumValue(object enumValue)
         {
             return TypeDescriptor.GetEnumValue(enumValue);
         }
+
+        public bool HasParseMethod(Type type) => false;
+
+        public object? Parse(string value, Type expectedType) => throw new NotImplementedException();
     }
 
     public YamlDeserializer(

test/Docfx.Build.SchemaDriven.Tests/MergeMarkdownFragmentsTest.cs

@@ -183,7 +183,7 @@ markdown content
         Assert.True(File.Exists(_rawModelFilePath));
         var rawModel = JsonUtility.Deserialize<JObject>(_rawModelFilePath);
         Assert.Single(warningLogs);
-        Assert.Equal("Unable to parse markdown fragments: Encountered an invalid YAML code block: (Line: 1, Col: 1, Idx: 0) - (Line: 1, Col: 28, Idx: 27): Exception during deserialization", warningLogs.First().Message);
+        Assert.StartsWith("Unable to parse markdown fragments: Encountered an invalid YAML code block: (Line: 1, Col: 1, Idx: 0) - (Line: 1, Col: 28, Idx: 27): ", warningLogs.First().Message);
         Assert.Equal("2", warningLogs.First().Line);
         Assert.Null(rawModel["summary"]);
     }

test/Docfx.Build.Tests/TocDocumentProcessorTest.cs

@@ -911,7 +911,7 @@ public void LoadBadTocYamlFileShouldGiveLineNumber()
       href: x2.md";
         var toc = _fileCreator.CreateFile(content, FileType.YamlToc);
         var ex = Assert.Throws<DocumentException>(() => TocHelper.LoadSingleToc(toc));
-        Assert.Equal("toc.yml is not a valid TOC File: (Line: 3, Col: 10, Idx: 22) - (Line: 3, Col: 10, Idx: 22): While scanning a plain scalar value, found invalid mapping.", ex.Message);
+        Assert.StartsWith("toc.yml is not a valid TOC File: (Line: 3, Col: 10, Idx: 22) - (Line: 3, Col: 10, Idx: 22): ", ex.Message);
     }
 
     [Fact]