Bump module installer

Author: tvdijen

composer.json

@@ -56,13 +56,14 @@
         "ext-simplexml": "*",
         "ext-SPL": "*",
         "ext-zlib": "*",
+
         "gettext/gettext": "~5.7",
         "gettext/translator": "~1.2",
         "phpmailer/phpmailer": "~6.10",
         "psr/event-dispatcher": "~1.0",
         "psr/log": "~3.0",
         "simplesamlphp/assert": "~1.9",
-        "simplesamlphp/composer-module-installer": "~1.5",
+        "simplesamlphp/composer-module-installer": "~1.6",
         "simplesamlphp/saml2": "~6.0",
         "simplesamlphp/saml2-legacy": "~4.19",
         "simplesamlphp/simplesamlphp-assets-base": "~2.5.0",