Do full upgrade to avoid issues when installing ARM dependencies

.github/workflows/build-ubuntu-aarch64.yml

@@ -17,16 +17,22 @@ jobs:
 
     steps:
     - uses: actions/checkout@v1
+    - name: Upgrade system
+      shell: bash
+      working-directory: ${{runner.workspace}}
+      run: |
+        sudo apt update
+        sudo apt full-upgrade
     - name: Install dependencies
       shell: bash
       working-directory: ${{runner.workspace}}
       run: |
-        sudo dpkg --add-architecture arm64 \
-        && sudo sh -c "sed \"s|^deb \([a-z\.:/]*\) \([a-z\-]*\) \(.*\)$|deb [arch=amd64] \1 \2 \3\ndeb [arch=arm64] http://ports.ubuntu.com/ubuntu-ports \2 \3|\" /etc/apt/sources.list > /etc/apt/sources.list.new" \
-        && sudo rm /etc/apt/sources.list \
-        && sudo mv /etc/apt/sources.list{.new,} \
-        && sudo apt-get update \
-        && sudo apt-get install {gcc-10,g++-10,pkg-config}-aarch64-linux-gnu libsdl2-dev:arm64 qtbase5-dev:arm64
+        sudo dpkg --add-architecture arm64
+        sudo sh -c "sed \"s|^deb \([a-z\.:/]*\) \([a-z\-]*\) \(.*\)$|deb [arch=amd64] \1 \2 \3\ndeb [arch=arm64] http://ports.ubuntu.com/ubuntu-ports \2 \3|\" /etc/apt/sources.list > /etc/apt/sources.list.new"
+        sudo rm /etc/apt/sources.list
+        sudo mv /etc/apt/sources.list{.new,}
+        sudo apt update
+        sudo apt install {gcc-10,g++-10,pkg-config}-aarch64-linux-gnu libsdl2-dev:arm64 qtbase5-dev:arm64
     - name: Create build environment
       run: mkdir ${{runner.workspace}}/build
     - name: Configure