Deps directly from Flutter

Author: brianegan

.github/actions/app_validation/action.yml

@@ -14,14 +14,15 @@ runs:
       shell: bash
       run: |
         sudo apt-get update
-        sudo apt-get install -y \
+        sudo apt-get install \
           clang \
           cmake \
+          git \
           ninja-build \
           pkg-config \
           libgtk-3-dev \
-          libayatana-appindicator3-dev \
-          libsoup2.4-dev \ 
+          liblzma-dev \
+          libstdc++-12-dev
           libglu1-mesa \
           xvfb