deps: Update Microsoft.Extensions.Configuration to version 3.1.29

Updates-dependency: Microsoft.Extensions.Configuration
Updates-dependency-from-version: 3.1.0
Updates-dependency-to-version: 3.1.29

Author: renovate[bot]

src/MdDocs.Common/Grynwald.MdDocs.Common.csproj

@@ -23,9 +23,9 @@
       The preview version 5 of these packages does not seem to have this issue,
       so this should be revisited after the relesae of .NET 5
     -->
-    <PackageReference Include="Microsoft.Extensions.Configuration" Version="3.1.0" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="3.1.0" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="3.1.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="3.1.29" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="3.1.29" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="3.1.29" />
   </ItemGroup>