ci(psalm): Install ftp extension for security scans

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

.github/workflows/static-code-analysis.yml

@@ -57,7 +57,7 @@ jobs:
         uses: shivammathur/setup-php@master
         with:
           php-version: '8.0'
-          extensions: ctype,curl,dom,fileinfo,gd,intl,json,ldap,mbstring,openssl,pdo_sqlite,posix,sqlite,xml,zip
+          extensions: ctype,curl,dom,fileinfo,ftp,gd,intl,json,ldap,mbstring,openssl,pdo_sqlite,posix,sqlite,xml,zip
           coverage: none
 
       - name: Composer install