Add missing libSM and libICE to snap

snap/snapcraft.yaml

@@ -318,10 +318,12 @@ parts:
       - libglx-dev
       - libgtk-3-dev
       - libharfbuzz-dev
+      - libice-dev
       - libicu-dev
       - libopengl-dev
       - libpcre2-dev
       - libpng-dev
+      - libsm-dev
       - libssl-dev
       - libwayland-dev
       - libx11-dev
@@ -354,10 +356,12 @@ parts:
       - libglx0
       - libgtk-3-0
       - libharfbuzz0b
+      - libice6
       - libicu66
       - libopengl0
       - libpcre2-16-0
       - libpng16-16
+      - libsm6
       - libssl1.1
       - libwayland-client0
       - libwayland-cursor0