fix(dump): pass --column-statistics=0 for MySQL 8 mysqldump on MariaDB, release as 0.0.7

Backport for the Shopware 6.6 line. When the server is MariaDB but only
MySQL 8's mysqldump is installed (e.g. dockware/web), the dump aborted
with "Unknown table 'COLUMN_STATISTICS' in information_schema (1109)".

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

composer.json

@@ -3,7 +3,7 @@
     "description": "Export database dumps for Shopware 6 environments.",
     "type": "shopware-platform-plugin",
     "license": "MIT",
-    "version": "0.0.6",
+    "version": "0.0.7",
     "keywords": [
         "shopware",
         "shopware6",