update cache key from linux apt, so no arm / x86 packages mixed

Author: dimitre

.github/workflows/of.yml

@@ -56,7 +56,7 @@ jobs:
           freeglut3-dev libxmu-dev libxxf86vm-dev libopenal-dev libsndfile1-dev libpulse-dev
           libudev-dev libdrm-dev
           libxcursor-dev libxi-dev libxinerama-dev
-          libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev gstreamer1.0-pulseaudio
+          libunwind-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev gstreamer1.0-pulseaudio
           gstreamer1.0-x gstreamer1.0-plugins-bad gstreamer1.0-alsa
           gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-libav