Fix testing against Nextcloud 22 (#1416)

* Fix testing against Nextcloud 22

Signed-off-by: Raimund Schlüßler <raimund.schluessler@mailbox.org>

.github/workflows/phpunit.yml

@@ -18,9 +18,20 @@ jobs:
       # do not stop on another job's failure
       fail-fast: false
       matrix:
-        php-versions: ['7.4']
+        php-versions: ['7.3', '7.4']
         databases: ['sqlite']
-        server-versions: ['master']
+        server-versions: ['stable20', 'stable21', 'master']
+        include:
+          - php-versions: '7.2'
+            databases: 'sqlite'
+            server-versions: 'stable20'
+# PHP8 needs an updated composer lock-file
+#          - php-versions: '8.0'
+#            databases: 'sqlite'
+#            server-versions: 'stable21'
+#          - php-versions: '8.0'
+#            databases: 'sqlite'
+#            server-versions: 'master'
   
     name: php${{ matrix.php-versions }}-${{ matrix.databases }}-${{ matrix.server-versions }}
 
@@ -48,7 +59,7 @@ jobs:
         with:
           php-version: ${{ matrix.php-versions }}
           tools: phpunit
-          extensions: mbstring, iconv, fileinfo, intl, sqlite, pdo_sqlite
+          extensions: mbstring, iconv, fileinfo, intl, sqlite, pdo_sqlite, gd, zip
           coverage: xdebug
 
       - name: Set up PHPUnit
@@ -117,7 +128,7 @@ jobs:
         with:
           php-version: ${{ matrix.php-versions }}
           tools: phpunit
-          extensions: mbstring, iconv, fileinfo, intl, mysql, pdo_mysql
+          extensions: mbstring, iconv, fileinfo, intl, mysql, pdo_mysql, gd, zip
           coverage: none
 
       - name: Set up PHPUnit
@@ -189,7 +200,7 @@ jobs:
         with:
           php-version: ${{ matrix.php-versions }}
           tools: phpunit
-          extensions: mbstring, iconv, fileinfo, intl, pgsql, pdo_pgsql
+          extensions: mbstring, iconv, fileinfo, intl, pgsql, pdo_pgsql, gd, zip
           coverage: none
 
       - name: Set up PHPUnit