Remove deprecated distributions, fix SDL2 deps

.github/workflows/stable-compilation.yml

@@ -30,8 +30,6 @@ jobs:
         image:
           #   version of: # gcc/g++ |     support end  #
           # --------------------------------------------
-          - ubuntu:20.04  #  9.3.0  | LTS       (4/25) #
-          - debian:11     # 10.2.1  | oldstable (8/24) #
           - ubuntu:22.04  # 11.2.0  | LTS       (6/27) #
           - debian:12     # 12.2.0  | stable    (6/26) #
 
@@ -43,7 +41,7 @@ jobs:
           apt-get install -yqq --no-install-recommends --no-install-suggests \
             ca-certificates build-essential cmake ninja-build meson git \
             autoconf autoconf-archive automake autotools-dev libtool \
-            sed gawk patch perl pkg-config curl unzip
+            sed gawk patch perl pkg-config curl unzip libpulse-dev
 
       - name: Clone Repository
         uses: actions/checkout@v4