Merge pull request #77 from hsaito/dependabot/nuget/develop/log4net-3.0.4

Bump log4net from 2.0.12 to 3.0.4

Author: hsaito

MyNumberNET_CLI/MyNumberNET_CLI.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>netcoreapp3.1</TargetFramework>
@@ -22,7 +22,7 @@
     </None>
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="log4net" Version="2.0.12" />
+    <PackageReference Include="log4net" Version="3.0.4" />
     <PackageReference Include="System.Console" Version="4.3.1" />
     <PackageReference Include="System.Net.Sockets" Version="4.3.0" />
   </ItemGroup>