fix: add ConfigureAwait(false) to all awaited calls

[deleteLater]

add ConfigureAwait(false) for every await calls

Useful links

• https://devblogs.microsoft.com/dotnet/configureawait-faq/
• https://www.jetbrains.com/help/rider/ConfigureAwait_Analysis.html
• https://github.com/Fody/ConfigureAwait?tab=readme-ov-file
• https://learn.microsoft.com/en-us/dotnet/fundamentals/code-analysis/quality-rules/ca2007