Fix CI

Author: StormBytePP

.github/workflows/ffmpeg.yml

@@ -55,7 +55,7 @@ jobs:
         run: |
           meson setup libvmaf libvmaf/build --buildtype release
           meson compile -C libvmaf/build
-          meson install -C libvmaf/build
+          sudo ninja -vC libvmaf/build install
       - name: Prepare FFmpeg (autotools)
         if: matrix.ffmpeg_build == 'autotools'
         run: |