Update dependency Ryujinx.Graphics.Vulkan.MoltenVK to 1.4.2-ryujinx.5 (#17)

This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [Ryujinx.Graphics.Vulkan.MoltenVK](https://github.com/Kenji-NX/MoltenVK) | `1.4.2-ryujinx.4` → `1.4.2-ryujinx.5` | ![age](https://developer.mend.io/api/mc/badges/age/nuget/Ryujinx.Graphics.Vulkan.MoltenVK/1.4.2-ryujinx.5?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/nuget/Ryujinx.Graphics.Vulkan.MoltenVK/1.4.2-ryujinx.4/1.4.2-ryujinx.5?slim=true) |

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### Release Notes

<details>
<summary>Kenji-NX/MoltenVK (Ryujinx.Graphics.Vulkan.MoltenVK)</summary>

### [`v1.4.2-ryujinx.5`](https://github.com/Kenji-NX/MoltenVK/releases/tag/v1.4.2-ryujinx.5)

##### Fork changes

- CI changes
  - Build with macOS 26
  - Remove `all` build
  - Add iOS Private API build

##### Upstream changes ([Changelog](https://github.com/KhronosGroup/MoltenVK/compare/29a0606...4b715bd))

- Fix incorrect placement heap check in MVKImagePlane::getMTLTexture()
- Fix AMD subgroup size to 32 for correct Metal simdgroup operations
- Fix SPIRV-Cross: symlink instead of submodule
- Fix regressions and crashes on Mac 1 (NVIDIA/Intel) GPUs
  - Work around combined sampler arg buffers on NVIDIA Mac1
  - `nativeTextureSwizzle = false` for NVIDIA Mac1
  - Restore shader-side image view swizzle fallback.
  - Avoid input attachment argument buffers on NVIDIA Mac1
  - Disable discard store checks on NVIDIA Mac1
  - Disable image descriptor argument buffers for shader swizzle
  - Advertise native texture swizzle only on supported GPU families
  - Simplify NVIDIA workaround checks
  - Disable discarded-fragment store checks on Mac1 GPUs
  - Avoid fragile Mac1 argument-buffer descriptor cases
- Do not rely on extension enable for vkGetPhysicalDeviceToolPropertiesEXT proc addr
- Emulate reversed-depth viewports on affected AMD Mac GPUs
  - Refine legacy AMD Mac2 workaround handling
  - Scope discarded-fragment store checks to Apple GPUs
- Disable non-working quad control flow
- Disable 64-bit float control properties

</details>

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Reviewed-on: https://git.ryujinx.app/projects/Kenji-NX/pulls/17

Directory.Packages.props

@@ -36,7 +36,7 @@
     <PackageVersion Include="Ryujinx.Graphics.Nvdec.Dependencies.Linux" Version="6.1.4-build6" />
     <PackageVersion Include="Ryujinx.Graphics.Nvdec.Dependencies.macOS" Version="5.0.3-build14" />
     <PackageVersion Include="Ryujinx.Graphics.Nvdec.Dependencies.Windows" Version="6.1.4-build6" />
-    <PackageVersion Include="Ryujinx.Graphics.Vulkan.MoltenVK" Version="1.4.2-ryujinx.4" />
+    <PackageVersion Include="Ryujinx.Graphics.Vulkan.MoltenVK" Version="1.4.2-ryujinx.5" />
     <PackageVersion Include="Ryujinx.LibHac" Version="0.21.0-alpha.133" />
     <PackageVersion Include="Ryujinx.SDL3-CS" Version="2026.707.0" />
     <PackageVersion Include="securifybv.ShellLink" Version="0.1.0" />