fix(ci): install ALSA headers for Linux and riscv64 builds (#5)

SoundCraft links ALSA through cpal; its pre-shared-workflow release.yml
installed libasound2-dev (and :riscv64). Without them the Linux x86_64,
aarch64 and riscv64 release jobs fail with "unable to find library
-lasound". Apps that don't use ALSA don't link it.

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

actions/install-linux-deps/action.yml

@@ -20,6 +20,7 @@ runs:
         sudo apt-get update
         sudo apt-get install -y --no-install-recommends \
           libxkbcommon-dev libwayland-dev libx11-dev libxrandr-dev libxi-dev libgl1-mesa-dev \
+          libasound2-dev pkg-config \
           desktop-file-utils appstream python3-yaml zsync
 
     - uses: storytold/craft-common-actions/actions/install-nfpm@main

actions/install-riscv64-cross/action.yml

@@ -24,5 +24,5 @@ runs:
         sudo apt-get install -y --no-install-recommends \
           gcc-riscv64-linux-gnu binutils-riscv64-linux-gnu libc6-dev-riscv64-cross libc6-dev:riscv64 qemu-user \
           libxkbcommon-dev:riscv64 libwayland-dev:riscv64 libx11-dev:riscv64 libxrandr-dev:riscv64 \
-          libxi-dev:riscv64 libgl1-mesa-dev:riscv64 \
+          libxi-dev:riscv64 libgl1-mesa-dev:riscv64 libasound2-dev:riscv64 pkg-config \
           desktop-file-utils appstream