chore: Bump JetBrains.Annotations from 2025.2.4 to 2026.2.0

---
updated-dependencies:
- dependency-name: JetBrains.Annotations
  dependency-version: 2026.2.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Directory.Packages.props

@@ -44,7 +44,7 @@
     <!-- Testing Libraries -->
     <PackageVersion Include="AwesomeAssertions" Version="9.4.0" />
     <PackageVersion Include="Basic.Reference.Assemblies.Net90" Version="1.8.9"/>
-    <PackageVersion Include="JetBrains.Annotations" Version="2025.2.4" />
+    <PackageVersion Include="JetBrains.Annotations" Version="2026.2.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.7.0"/>
     <PackageVersion Include="Microsoft.Testing.Extensions.CodeCoverage" Version="18.8.0" />
     <PackageVersion Include="System.Formats.Asn1" Version="6.0.1" />