add support for .net 9

extend obsolete warning suppressions in build command

Merge pull request #18 from SharpGrip/17-net8-fluentautovalidation-an…

…d-the-default-modelstateinvalidfilter

fix unvalidated entries when validation is skipped due to annotation configuration

version bump

change dotnet version to 8.0

version bump

Merge pull request #2 from SharpGrip/1-mvc-filter-breaks-if-parameter…

…-is-not-present-in-the-action-arguments

add check if the parameter exists in the action arguments

version bump