Bump PublicApiGenerator from 11.5.3 to 11.5.4

---
updated-dependencies:
- dependency-name: PublicApiGenerator
  dependency-version: 11.5.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

test/Microsoft.OpenApi.Tests/Microsoft.OpenApi.Tests.csproj

@@ -18,7 +18,7 @@
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" PrivateAssets="all" />
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
-    <PackageReference Include="PublicApiGenerator" Version="11.5.3" />
+    <PackageReference Include="PublicApiGenerator" Version="11.5.4" />
   </ItemGroup>
 
   <ItemGroup>