Merge pull request #4 from specklesystems/alan/misc-importer-fixes · specklesystems/speckle-ifc-import@793dcf8

ubuntu-latest pipelines will use ubuntu-24.04 soon. For more details, see https://github.com/actions/runner-images/issues/10636

🔫 Build and Pack: src/Speckle.WebIfc.Importer/Ara3D.IfcParser/IfcEntity.cs#L24

Nullability of type of parameter 'obj' doesn't match overridden member (possibly because of nullability attributes).

🔫 Build and Pack: src/Speckle.WebIfc.Importer/Ara3D.StepParser/StepDocument.cs#L36

Cannot convert null literal to non-nullable reference type.

🔫 Build and Pack: src/Speckle.WebIfc.Importer/Ara3D.StepParser/StepNode.cs#L40

Cannot convert null literal to non-nullable reference type.

🔫 Build and Pack: src/Speckle.WebIfc.Importer/Ara3D.IfcParser/IfcGraph.cs#L15

Possible null reference argument for parameter 'logger' in 'StepDocument.StepDocument(FilePath filePath, ILogger logger = null)'.

🔫 Build and Pack: src/Speckle.WebIfc.Importer/Ara3D.IfcParser/IfcEntity.cs#L42