[DO NOT MERGE] - investigation

[DaveTryon]

Our PR builds have begun to fail for unknown reasons. This PR is to try to determine if it's related to a change we made recently or something external. The failures are coming when running tests in linux:

System.IO.FileNotFoundException: Could not find 'mono' host. Make sure that 'mono' is installed on the machine and is available in PATH environment variable.
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Helpers.DotnetHostHelper.GetMonoPath() in /_/src/Microsoft.TestPlatform.CoreUtilities/Helpers/DotnetHostHelper.cs:line 93
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Hosting.DefaultTestHostManager.GetTestHostProcessStartInfo(IEnumerable`1 sources, IDictionary`2 environmentVariables, TestRunnerConnectionInfo connectionInfo) in /_/src/Microsoft.TestPlatform.TestHostProvider/Hosting/DefaultTestHostManager.cs:line 218
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyOperationManager.SetupChannel(IEnumerable`1 sources, String runSettings) in /_/src/Microsoft.TestPlatform.CrossPlatEngine/Client/ProxyOperationManager.cs:line 226
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyExecutionManager.InitializeTestRun(TestRunCriteria testRunCriteria, IInternalTestRunEventsHandler eventHandler) in /_/src/Microsoft.TestPlatform.CrossPlatEngine/Client/ProxyExecutionManager.cs:line 182

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 137 lines in your changes missing coverage. Please review.

Project coverage is 46.47%. Comparing base (ff40e98) to head (b7d1d34).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...bom.Api.Tests/PackageDetails/RubyGemsUtilsTests.cs	0.00%	16 Missing ⚠️
...s/Config/ConfigurationBuilderTestsForValidation.cs	0.00%	14 Missing ⚠️
...s/Config/ConfigurationBuilderTestsForGeneration.cs	0.00%	13 Missing ⚠️
...Utils/ComponentDetectionCliArgumentBuilderTests.cs	0.00%	10 Missing ⚠️
...bom.Api.Tests/Executors/FileListEnumeratorTests.cs	0.00%	8 Missing ⚠️
...s/Converters/SbomToolManifestPathConverterTests.cs	0.00%	5 Missing ⚠️
...bom.Api.Tests/Entities/FileValidationResultTest.cs	0.00%	5 Missing ⚠️
...ft.Sbom.Api.Tests/Executors/PackagesWalkerTests.cs	0.00%	5 Missing ⚠️
...t.Sbom.Api.Tests/Executors/DirectoryWalkerTests.cs	0.00%	4 Missing ⚠️
...Tests/Utils/ComponentDetectorCachedExecutorTest.cs	0.00%	4 Missing ⚠️
... and 24 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #854      +/-   ##
==========================================
+ Coverage   44.50%   46.47%   +1.97%     
==========================================
  Files         355      355              
  Lines       14142    14151       +9     
  Branches     1161     1163       +2     
==========================================
+ Hits         6294     6577     +283     
+ Misses       7308     7026     -282     
- Partials      540      548       +8     

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[DaveTryon]

Investigation complete