Bump log4net from 2.0.17 to 3.0.3 in /src (#237)

Bumps [log4net](https://github.com/apache/logging-log4net) from 2.0.17 to 3.0.3.
- [Release notes](https://github.com/apache/logging-log4net/releases)
- [Commits](apache/logging-log4net@rel/2.0.17...rel/3.0.3)

---
updated-dependencies:
- dependency-name: log4net
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Sarah Birrer <95348063+bbtbir@users.noreply.github.com>

Author: dependabot[bot]

src/AzureDevOpsPolicyConfigurator/AzureDevOpsPolicyConfigurator.csproj

@@ -30,7 +30,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="log4net" Version="2.0.17" />
+    <PackageReference Include="log4net" Version="3.0.3" />
     <PackageReference Include="Microsoft.TeamFoundationServer.Client" Version="19.225.1" />
     <PackageReference Include="Microsoft.VisualStudio.Services.InteractiveClient" Version="19.225.1" />
     <PackageReference Include="Spectre.Cli" Version="0.49.0" />