Changes to GitHub Actions

 - update OS to Ubuntu 22.04
 - use OS python version
 - run apt-get update
 - remove installation of python3-lxml which is now done by icat-ansible

.github/workflows/ci-build.yml

@@ -8,29 +8,21 @@ on:
 
 jobs:
   build_and_tests:
-    runs-on: ubuntu-20.04
-    continue-on-error: ${{ matrix.experimental }}
+    runs-on: ubuntu-22.04
     strategy:
-      fail-fast: false
       matrix:
-        include:
-          - version: 11
-            experimental: false
-          - version: 17
-            experimental: true
+        java_version: [11, 17]
 
     steps:
       # Setup Java & Python
       - name: Setup Java
         uses: actions/setup-java@v2
         with:
           distribution: 'temurin'
-          java-version: ${{ matrix.version }}
-      - name: Setup Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: "3.9.7"
-          architecture: x64
+          java-version: ${{ matrix.java_version }}
+
+      - name: Run apt-get update
+        run: sudo apt-get update
 
       # ICAT Ansible clone and install dependencies
       - name: Checkout icat-ansible
@@ -64,10 +56,6 @@ jobs:
           sudo apt-get remove --purge "mysql*"
           sudo rm -rf /var/lib/mysql* /etc/mysql
 
-      # Needed for `maven_artifact` module on Ansible - lxml is in requirements.txt but doesn't seem to work on GitHub Actions
-      - name: Install lxml
-        run: sudo apt-get install python3-lxml
-
       # Create local instance of ICAT
       - name: Run ICAT Ansible Playbook
         run: |