Chore: Upgrade nucular GUI dependency

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+# Compile and run compute programs on CPU
+
+This projects contains the compiler for turning Vulkan SPIR-V compute shaders
+into binaries for arm64, arm or amd64, using
+[SwiftShader](https://github.com/eliasnaur/swiftshader) with a few
+modifications. A runtime implemented in C and Go is available for running the
+resulting binaries.
+
+The primary use is to support a CPU-based rendering fallback for
+[Gio](https://gioui.org). In particular, the `gioui.org/shader/piet` package
+contains arm, arm64, amd64 binaries for
+[piet-gpu](https://github.com/linebender/piet-gpu).
+
+# Compiling and running shaders
+
+The `init.sh` script clones the modifed SwiftShader projects and builds it for
+64-bit and 32-bit. SwiftShader is not designed to cross-compile which is why a
+32-bit build is needed to compile shaders for arm.
+
+The `example/run.sh` script demonstrates compiling and running a simple compute
+program.
+
+## Issues and contributions
+
+See the [Gio contribution guide](https://gioui.org/doc/contribute).