Update composer for techdivision/import

Author: Mardl

composer.json

@@ -4,7 +4,7 @@
     "license": "OSL-3.0",
     "require": {
         "php": ">=7.1.0",
-        "techdivision/import": "16.8.2",
+        "techdivision/import": "16.8.3",
         "techdivision/import-cli": "11.1.0",
         "techdivision/import-app-simple": "17.0.0",
         "techdivision/import-configuration-jms": "16.1.1",