Bump Platform.IO from 0.2.2 to 0.3.0

Bumps [Platform.IO](https://github.com/linksplatform/IO) from 0.2.2 to 0.3.0.
- [Release notes](https://github.com/linksplatform/IO/releases)
- [Commits](linksplatform/IO@0.2.2...0.3.0)

---
updated-dependencies:
- dependency-name: Platform.IO
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

csharp/Platform.Memory/Platform.Memory.csproj

@@ -38,7 +38,7 @@
 
   <ItemGroup>
     <PackageReference Include="System.IO.MemoryMappedFiles" Version="4.3.0" />
-    <PackageReference Include="Platform.IO" Version="0.2.2" />
+    <PackageReference Include="Platform.IO" Version="0.3.0" />
   </ItemGroup>
 
 </Project>