Build MW images with PHP 8.0 as well as 8.1 and 8.2 (#9)

* Build MW images with PHP 8.0 as well as 8.1 and 8.2

This is for SemanticMediaWiki/SemanticMediaWiki#5903

* Update main.yml

.github/workflows/main.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         mediawiki_version: ['1.43', '1.42', '1.41', '1.40', '1.39']
-        php_version: ['8.2', '8.1']
+        php_version: ['8.2', '8.1', '8.0']
         target_repository: ['mediawiki', 'mediawiki-ci']
         include:
           # set global default php
@@ -24,6 +24,14 @@ jobs:
         exclude:
           - php_version: '8.2'
             mediawiki_version: '1.39'
+          - php_version: '8.0'
+            mediawiki_version: '1.40'
+          - php_version: '8.0'
+            mediawiki_version: '1.41'
+          - php_version: '8.0'
+            mediawiki_version: '1.42'
+          - php_version: '8.0'
+            mediawiki_version: '1.43'
     steps:
       - name: Checkout
         uses: actions/checkout@v4