Skip IDE0032 warning in synthetics CI job

[reakaleek]

Fix https://github.com/elastic/docs-builder/actions/runs/19364044721/job/55402636155?pr=2205

Error: /home/runner/work/docs-builder/docs-builder/src/Elastic.Documentation.Configuration/Assembler/GoogleTagManager.cs(14,2): error IDE0032: Use auto property (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0032) [/home/runner/work/docs-builder/docs-builder/src/Elastic.Documentation.Configuration/Elastic.Documentation.Configuration.csproj]
Error: /home/runner/work/docs-builder/docs-builder/src/Elastic.Documentation.Configuration/BuildContext.cs(61,2): error IDE0032: Use auto property (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0032) [/home/runner/work/docs-builder/docs-builder/src/Elastic.Documentation.Configuration/Elastic.Documentation.Configuration.csproj]
Error: /home/runner/work/docs-builder/docs-builder/src/Elastic.Documentation.Configuration/Builder/ConfigurationFile.cs(39,2): error IDE0032: Use auto property (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0032) [/home/runner/work/docs-builder/docs-builder/src/Elastic.Documentation.Configuration/Elastic.Documentation.Configuration.csproj]

[reakaleek]

Merging because it's blocking other PRs

[reakaleek]

It looks like this isn't actually working... the error is flaky and doesn't happen always.

In this PR the run succeeded without warnings.

[Mpdreamz]

Cool cool! Will follow up fixing the ide0032 errors