fix actions failing on PHP 7.3

.github/workflows/phpunit.yml

@@ -48,7 +48,7 @@ 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, zip, gd
           coverage: none
 
       - name: Set up PHPUnit
@@ -118,7 +118,7 @@ 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, zip, gd
           coverage: none
 
       - name: Set up PHPUnit
@@ -190,7 +190,7 @@ 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, zip, gd
           coverage: none
 
       - name: Set up PHPUnit