graphics/vapoursynth-waifu2x-ncnn-vulkan: unbreak after 51a9ba18 via bundling

CMake Warning at /usr/local/lib/cmake/OSDependentTargets.cmake:2 (message):
  Using `OSDependentTargets.cmake` is deprecated: use `find_package(glslang)`
  to find glslang CMake targets.
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:205 (include)

CMake Error at /usr/local/lib/cmake/OSDependentTargets.cmake:5 (include):
  include could not find requested file:

    /usr/local/lib/cmake/../../lib/glslang/glslang-targets.cmake
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:205 (include)

CMake Error at /usr/local/lib/cmake/OSDependentTargets.cmake:8 (add_library):
  add_library cannot create ALIAS target "OSDependent" because target
  "glslang::OSDependent" does not already exist.
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:205 (include)

CMake Warning at /usr/local/lib/cmake/OGLCompilerTargets.cmake:2 (message):
  Using `OGLCompilerTargets.cmake` is deprecated: use `find_package(glslang)`
  to find glslang CMake targets.
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:206 (include)

CMake Error at /usr/local/lib/cmake/OGLCompilerTargets.cmake:5 (include):
  include could not find requested file:

    /usr/local/lib/cmake/../../lib/glslang/glslang-targets.cmake
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:206 (include)

CMake Error at /usr/local/lib/cmake/OGLCompilerTargets.cmake:8 (add_library):
  add_library cannot create ALIAS target "OGLCompiler" because target
  "glslang::OGLCompiler" does not already exist.
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:206 (include)

CMake Warning at /usr/local/lib/cmake/HLSLTargets.cmake:2 (message):
  Using `HLSLTargets.cmake` is deprecated: use `find_package(glslang)` to
  find glslang CMake targets.
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:209 (include)

CMake Error at /usr/local/lib/cmake/HLSLTargets.cmake:5 (include):
  include could not find requested file:

    /usr/local/lib/cmake/../../lib/glslang/glslang-targets.cmake
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:209 (include)

CMake Error at /usr/local/lib/cmake/HLSLTargets.cmake:8 (add_library):
  add_library cannot create ALIAS target "HLSL" because target
  "glslang::HLSL" does not already exist.
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:209 (include)

CMake Warning at /usr/local/lib/cmake/glslangTargets.cmake:2 (message):
  Using `glslangTargets.cmake` is deprecated: use `find_package(glslang)` to
  find glslang CMake targets.
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:211 (include)

CMake Error at /usr/local/lib/cmake/glslangTargets.cmake:5 (include):
  include could not find requested file:

    /usr/local/lib/cmake/../../lib/glslang/glslang-targets.cmake
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:211 (include)

CMake Error at /usr/local/lib/cmake/glslangTargets.cmake:11 (add_library):
  add_library cannot create ALIAS target "glslang" because target
  "glslang::glslang" does not already exist.
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:211 (include)

CMake Error at /usr/local/lib/cmake/glslangTargets.cmake:12 (add_library):
  add_library cannot create ALIAS target "MachineIndependent" because target
  "glslang::MachineIndependent" does not already exist.
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:211 (include)

CMake Error at /usr/local/lib/cmake/glslangTargets.cmake:13 (add_library):
  add_library cannot create ALIAS target "GenericCodeGen" because target
  "glslang::GenericCodeGen" does not already exist.
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:211 (include)

CMake Warning at /usr/local/lib/cmake/SPIRVTargets.cmake:2 (message):
  Using `SPIRVTargets.cmake` is deprecated: use `find_package(glslang)` to
  find glslang CMake targets.
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:212 (include)

CMake Error at /usr/local/lib/cmake/SPIRVTargets.cmake:5 (include):
  include could not find requested file:

    /usr/local/lib/cmake/../../lib/glslang/glslang-targets.cmake
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:212 (include)

CMake Error at /usr/local/lib/cmake/SPIRVTargets.cmake:8 (add_library):
  add_library cannot create ALIAS target "SPIRV" because target
  "glslang::SPIRV" does not already exist.
Call Stack (most recent call first):
  deps/ncnn/CMakeLists.txt:212 (include)

CMake Warning at deps/ncnn/CMakeLists.txt:215 (message):
  glslang or SPIRV target not found! NCNN_SYSTEM_GLSLANG will be turned off.

CMake Error at deps/ncnn/CMakeLists.txt:223 (message):
  The submodules were not downloaded! Please update submodules with "git
  submodule update --init" and try again.