Update CI workflow to use Ubuntu 22.04

Author: Chris53897

.github/workflows/Build-Test.yml

@@ -17,7 +17,7 @@ jobs:
         operating-system: [ubuntu-22.04]
         php-versions: ['7.4', '8.0', '8.1', '8.2', '8.3', '8.4', '8.5']
         include:
-          - operating-system: ubuntu-20.04
+          - operating-system: ubuntu-22.04
             php-versions: '7.4'
             COMPOSER_FLAGS: '--prefer-stable --prefer-lowest'
             PHPUNIT_FLAGS: '--coverage-clover build/coverage.xml'