releasenotes-builder: resolve IntelijIdea's 'Usages of API which isn't available at the configured language level' violation
releasenotes-builder: resolve IntelijIdea's 'Usages of API which isn't available at the configured language level' violation

Vladlis/contribution,rnveach/contribution,Vladlis/contribution,MEZk/contribution,rnveach/contribution,rnveach/contribution,checkstyle/contribution,checkstyle/contribution,Vladlis/contribution,rnveach/contribution,rnveach/contribution,MEZk/contribution,MEZk/contribution,checkstyle/contribution,Vladlis/contribution,MEZk/contribution,Vladlis/contribution,checkstyle/contribution,checkstyle/contribution,rnveach/contribution,rnveach/contribution,Vladlis/contribution,MEZk/contribution,checkstyle/contribution,checkstyle/contribution,MEZk/contribution