Bump ProjectDefaults from 1.0.138 to 1.0.139 in /src (#541)

Author: dependabot[bot]

src/Directory.Packages.props

@@ -11,7 +11,7 @@
     <PackageVersion Include="MarkdownSnippets.MsBuild" Version="27.0.2" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageVersion Include="Polyfill" Version="6.14.0" />
-    <PackageVersion Include="ProjectDefaults" Version="1.0.138" />
+    <PackageVersion Include="ProjectDefaults" Version="1.0.139" />
     <PackageVersion Include="Resourcer.Fody" Version="1.8.1" />
     <PackageVersion Include="Serilog" Version="4.0.2" />
     <PackageVersion Include="Serilog.Sinks.File" Version="6.0.0" />