[MSITE-1011] plugin broken when run with Maven 4

[jira-importer]

Hervé Boutemy opened MSITE-1011 and commented

seen at large scale when doing 4.0.0-beta-1 plugins releases: https://lists.apache.org/thread/ffc9rt57z6klk57v2k6xf06qmjmp37og

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Affects: 3.12.1

Issue Links:

• MDEP-948 building site with Maven 4 throws NPE saying "this.configuration" is null