Bump System.IO.Abstractions from 21.0.22 to 21.0.26

Bumps System.IO.Abstractions from 21.0.22 to 21.0.26.

---
updated-dependencies:
- dependency-name: System.IO.Abstractions
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

BenchmarkMockNet/BenchmarkMockNet.csproj

@@ -16,7 +16,7 @@
 		<PackageReference Include="FakeItEasy" Version="8.3.0" />
 		<PackageReference Include="PCLMock" Version="5.1.3" />
 		<PackageReference Include="Rocks" Version="8.1.0" />
-		<PackageReference Include="System.IO.Abstractions" Version="21.0.22" />
+		<PackageReference Include="System.IO.Abstractions" Version="21.0.26" />
 	</ItemGroup>
 
 </Project>