Update supported versions to include 6.7 (#80)

Author: jkniest

docs/supported-versions.md

@@ -2,13 +2,14 @@
 
 Please use the following table to check which version of the FixturePlugin can be used with your PHP and Shopware versions:
 
-| Shopware Version | PHP Versions | Newest FixturePlugin version | Supported |
-|------------------|--------------|------------------------------|-----------|
-| 6.6.*            | v8.2, v8.3   | v3.0.*                       | ✅         |
-| 6.5.*            | v8.2, v8.3   | v3.0.*                       | ✅         |
-| 6.5.*            | v8.1         | v2.0.*                       | ❌         |
-| 6.4.*            | v8.1, v8.2   | v2.0.*                       | ❌         |
-| 6.3.*            | v8.1, v8.2   | v2.0.*                       | ❌         |
+| Shopware Version | PHP Versions     | Newest FixturePlugin version | Supported |
+| ------------------ | --------------   | ------------------------------ | ----------- |
+| 6.7.*            | v8.2, v8.3, v8.4 | v3.2.*                       | ✅         |
+| 6.6.*            | v8.2, v8.3       | v3.2.*                       | ✅         |
+| 6.5.*            | v8.2, v8.3       | v3.2.*                       | ✅         |
+| 6.5.*            | v8.1             | v2.0.*                       | ❌         |
+| 6.4.*            | v8.1, v8.2       | v2.0.*                       | ❌         |
+| 6.3.*            | v8.1, v8.2       | v2.0.*                       | ❌         |
 
 :::info
 We strive to support new Shopware and PHP versions as quickly as possible. If there is a new version out and it is not yet supported, feel free to contribute and help us expedite the update process!