chore(deps): Bump the all group with 3 updates

Bumps the all group with 3 updates: [Microsoft.OpenApi.Readers](https://github.com/Microsoft/OpenAPI.NET), [Verify.MSTest](https://github.com/VerifyTests/Verify) and [Verify.SourceGenerators](https://github.com/VerifyTests/Verify.SourceGenerators).


Updates `Microsoft.OpenApi.Readers` from 1.6.18 to 1.6.19
- [Release notes](https://github.com/Microsoft/OpenAPI.NET/releases)
- [Commits](microsoft/OpenAPI.NET@1.6.18...1.6.19)

Updates `Verify.MSTest` from 26.2.0 to 26.3.0
- [Release notes](https://github.com/VerifyTests/Verify/releases)
- [Commits](VerifyTests/Verify@26.2.0...26.3.0)

Updates `Verify.SourceGenerators` from 2.3.0 to 2.4.0
- [Release notes](https://github.com/VerifyTests/Verify.SourceGenerators/releases)
- [Commits](VerifyTests/Verify.SourceGenerators@2.3.0...2.4.0)

---
updated-dependencies:
- dependency-name: Microsoft.OpenApi.Readers
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all
- dependency-name: Verify.MSTest
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all
- dependency-name: Verify.SourceGenerators
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all
...

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

src/helpers/FixOpenApiSpec/FixOpenApiSpec.csproj

@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.OpenApi.Readers" Version="1.6.18" />
+    <PackageReference Include="Microsoft.OpenApi.Readers" Version="1.6.19" />
   </ItemGroup>
 
 </Project>

src/tests/Anthropic.SnapshotTests/Anthropic.SnapshotTests.csproj

@@ -28,8 +28,8 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.SourceGenerators.Testing.MSTest" Version="1.1.2" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.11.0" />
-    <PackageReference Include="Verify.MSTest" Version="26.2.0" />
-    <PackageReference Include="Verify.SourceGenerators" Version="2.3.0" />
+    <PackageReference Include="Verify.MSTest" Version="26.3.0" />
+    <PackageReference Include="Verify.SourceGenerators" Version="2.4.0" />
   </ItemGroup>
 
   <ItemGroup Label="GlobalUsings">