fix(requirements): revert removal of ffmpeg in unitest.yml and Dockerfile

.github/workflows/unitest.yml

@@ -18,6 +18,7 @@ jobs:
     - name: Install dependencies
       run: |
         sudo apt update
+        sudo apt -y install ffmpeg
         wget https://github.com/fumiama/RVC-Models-Downloader/releases/download/v0.2.3/rvcmd_linux_amd64.deb
         sudo apt -y install ./rvcmd_linux_amd64.deb
         python -m pip install --upgrade pip

Dockerfile

@@ -8,7 +8,7 @@ WORKDIR /app
 
 # Install dependenceis to add PPAs
 RUN apt-get update && \
-    apt-get install -y -qq aria2 && apt clean && \
+    apt-get install -y -qq ffmpeg aria2 && apt clean && \
     apt-get install -y software-properties-common && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*