Fix GH-Actions Ubuntu package download issues

Author: peterNordin

.github/workflows/ci-build.yaml

@@ -65,7 +65,9 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Install Packages
-        run: sudo apt-get install qt5-default qtbase5-dev qtbase5-private-dev libqt5webkit5-dev libqt5svg5-dev libqt5opengl5-dev libhdf5-dev libmarkdown2-dev libmsgpack-dev libqwt-qt5-dev libzmq3-dev
+        run: |
+          sudo apt-get update
+          sudo apt-get install qt5-default qtbase5-dev qtbase5-private-dev libqt5webkit5-dev libqt5svg5-dev libqt5opengl5-dev libhdf5-dev libmarkdown2-dev libmsgpack-dev libqwt-qt5-dev libzmq3-dev
 
       - name: Checkout
         uses: actions/checkout@v3