build(deps): bump pnnx from 0.0.4 to 20240527 in /requirements

[dependabot[bot]]

Bumps pnnx from 0.0.4 to 20240527.

Release notes

Sourced from pnnx's releases.

android ios macos linux windows webassembly 预编译库 20240410 56775de

编译版本，默认配置，android-ndk-r26c，xcode 15.2，ubuntu-20.04，ubuntu-22.04，vs2015，vs2017，vs2019，vs2022，emscripten-3.1.28

file	content	arch
ncnn-full-source.zip	包含全部 submodule 代码的完整源码
ncnn-android.zip	android 静态库/动态库	armeabi-v7a + arm64-v8a + x86 + x86_64
ncnn-android-vulkan.zip	android 静态库/动态库，支持 GPU	armeabi-v7a + arm64-v8a + x86 + x86_64
ncnn-apple.zip	apple xcframework，ios + ios-simulator + macos + mac-catalyst + watchos + watchos-simulator + tvos + tvos-simulator + visionos + visionos-simulator	arm64 + arm64e + x86_64
ncnn-apple-vulkan.zip	apple xcframework，ios + ios-simulator + macos + mac-catalyst + watchos + watchos-simulator + tvos + tvos-simulator + visionos + visionos-simulator，支持 GPU	arm64 + arm64e + x86_64
ncnn-ios.zip	ios 静态库	arm64
ncnn-ios-vulkan.zip	ios 静态库，支持 GPU	arm64
ncnn-ios-simulator.zip	ios simulator 静态库	x86_64 + arm64
ncnn-ios-simulator-vulkan.zip	ios simulator 静态库，支持 GPU	x86_64 + arm64
ncnn-macos.zip	macos 静态库	x86_64 + arm64
ncnn-macos-vulkan.zip	macos 静态库，支持 GPU	x86_64 + arm64
ncnn-mac-catalyst.zip	mac catalyst 静态库	x86_64 + arm64
ncnn-mac-catalyst-vulkan.zip	mac catalyst 静态库，支持 GPU	x86_64 + arm64
ncnn-watchos.zip	watchos 静态库	armv7k + arm64_32
ncnn-watchos-simulator.zip	watchos simulator 静态库	x86_64 + arm64
ncnn-tvos.zip	tvos 静态库	x86_64 + arm64
ncnn-tvos-vulkan.zip	tvos 静态库，支持 GPU	x86_64 + arm64
ncnn-tvos-simulator.zip	tvos simulator 静态库	x86_64 + arm64
ncnn-tvos-simulator-vulkan.zip	tvos simulator 静态库，支持 GPU	x86_64 + arm64
ncnn-visionos.zip	visionos 静态库	arm64
ncnn-visionos-simulator.zip	visionos simulator 静态库	x86_64 + arm64
ncnn-ubuntu.zip	ubuntu linux 静态库/动态库，支持 GPU，模型转换工具	x86_64
ncnn-windows.zip	windows 静态库/动态库，支持 GPU，模型转换工具	x86 + x64 + arm + arm64
ncnn-webassembly.zip	webassembly 静态库	wasm32 + simd + threads + simd-threads

解耦合layer cpu和vulkan，不再使用virtual public继承 支持编译动态库时编译单元测试 单层特性掩码支持禁用多线程 extractor set_num_threads和set_vulkan_compute现在是无操作 gpu shader增加uniform类型改善adreno上fp16兼容性 检测vulkan矩阵扩展8x8x16配置，fp16a条件下默认使用fp16累加 更新stb_image rvv/neon优化 x86 mish avx512优化(@​wnqn1597) riscv gemm fp32 rvv优化(@​Xinyu302) 加载模型上传权重时不保留无用的临时数据 c-api新增draw rectangle/text/circle/line接口(@​Deepdive543443) 修复armv7平台加载fp16模型sigbus错误 修复reduction L2norm denormal产生inf的问题 修复arm平台pixel_resize rounding导致的数值误差 修复softmax arm fp16计算错误 修复risc-v rvv输出fp16没有自动转换的问题 修复destroy_gpu_instance在驱动加载不完整时crash的问题(@​shatyuka) destroy_gpu_instance等待全部设备idle(@​whyb) 修复low-level api没有load_param直接create_pipeline可能的崩溃 修复ncnnoptimize在shape推断的崩溃 ncnnoptimize支持更多新算子，修复gemm权重丢失问题

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