ci/{mingw,win32}: specify nasm as it seems to be required now by libass

Fixes mingw and win32 builds after 1774117b80

.github/workflows/build.yml

@@ -163,7 +163,7 @@ jobs:
           python -m pip install build wheel
           python -m build --wheel --no-isolation meson
           python -m pip install (Get-Item ./meson/dist/meson-*-py3-none-any.whl).FullName
-          choco install ccache
+          choco install ccache nasm
 
       - name: Update Meson WrapDB
         run: |

ci/build-mingw64.sh

@@ -46,6 +46,7 @@ pkgconfig = 'pkg-config'
 pkg-config = 'pkg-config'
 windres = '${TARGET}-windres'
 dlltool = '${TARGET}-dlltool'
+nasm = 'nasm'
 exe_wrapper = '${WINE}'
 [host_machine]
 system = 'windows'