chore: bump Microsoft.NET.Test.Sdk to v18.x

[vbreuss]

This PR updates the Microsoft.NET.Test.Sdk package from version 17.14.0 to 18.0.1, addressing compatibility requirements for the newer SDK version by suppressing target framework support build errors in test projects.

• Bumped Microsoft.NET.Test.Sdk from v17.14.0 to v18.0.1
• Added SuppressTfmSupportBuildErrors property to prevent build errors related to target framework compatibility

[github-actions[bot]]

Test Results

   23 files   -     8     23 suites   - 8   8s ⏱️ -6s 1 043 tests  -   108    922 ✅  -   228  121 💤 +120  0 ❌ ±0  6 745 runs   - 4 312  6 024 ✅  - 4 194  721 💤  - 118  0 ❌ ±0 

Results for commit 88e17951. ± Comparison against base commit 9caf7a1f.

This pull request removes 108 tests.

System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryInfoTests ‑ MockDirectoryInfo_Exists("c:\\temp\\folder",True)
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryInfoTests ‑ MockDirectoryInfo_Exists("c:\\temp\\folder\\notExistant",False)
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryInfoTests ‑ MockDirectoryInfo_GetExtension_ShouldReturnEmptyString("c:\\temp")
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryInfoTests ‑ MockDirectoryInfo_GetExtension_ShouldReturnEmptyString("c:\\temp\\")
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryTests ‑ MockDirectory_EnumerateDirectories_ShouldReturnPathsPrefixedWithQueryPath("Folder","Folder\\SubFolder")
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryTests ‑ MockDirectory_EnumerateDirectories_ShouldReturnPathsPrefixedWithQueryPath("Folder\\","Folder\\SubFolder")
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryTests ‑ MockDirectory_EnumerateDirectories_ShouldReturnPathsPrefixedWithQueryPath("Folder\\..\\.\\Folder","Folder\\..\\.\\Folder\\SubFolder")
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryTests ‑ MockDirectory_Move_ShouldMoveDirectories("A:\\folder1\\","A:\\folder3\\","file.txt","folder2\\file2.txt")
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryTests ‑ MockDirectory_Move_ShouldMoveDirectories("A:\\folder1\\","a:\\folder3\\","file.txt","Folder2\\fiLe2.txt")
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryTests ‑ MockDirectory_Move_ShouldMoveDirectories("A:\\folder1\\","a:\\folder3\\","file.txt","Folder2\\file2.txt")
…

This pull request skips 120 tests.

System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryGetAccessControlTests ‑ MockDirectory_GetAccessControl_ShouldReturnAccessControlOfDirectoryData
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryGetAccessControlTests ‑ MockDirectory_GetAccessControl_ShouldThrowArgumentExceptionIfPathContainsOnlyWhitespaces("   ")
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryGetAccessControlTests ‑ MockDirectory_GetAccessControl_ShouldThrowArgumentExceptionIfPathContainsOnlyWhitespaces(" ")
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryGetAccessControlTests ‑ MockDirectory_GetAccessControl_ShouldThrowDirectoryNotFoundExceptionIfDirectoryDoesNotExistInMockData
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryInfoAccessControlTests ‑ MockDirectoryInfo_GetAccessControl_ShouldReturnAccessControlOfDirectoryData
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryInfoAccessControlTests ‑ MockDirectoryInfo_SetAccessControl_ShouldSetAccessControlOfDirectoryData
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryInfoTests ‑ Directory_exists_after_creation_with_security
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryInfoTests ‑ MockDirectoryInfo_FullName_ShouldReturnNormalizedUNCPath("\\\\unc/folder\\\\foo","\\\\unc\\folder\\foo")
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryInfoTests ‑ MockDirectoryInfo_FullName_ShouldReturnNormalizedUNCPath("\\\\unc\\folder","\\\\unc\\folder")
System.IO.Abstractions.TestingHelpers.Tests.MockDirectoryInfoTests ‑ MockDirectoryInfo_FullName_ShouldReturnPathWithTrimmedTrailingSpaces("c:\\temp\\folder  ","c:\\temp\\folder")
…

:recycle: This comment has been updated with latest results.