Bump @springio/antora-extensions from 1.14.4 to 1.14.6 in /docs #8701

Job	Run time
Build (ubuntu-latest, 17) / Build	8m 22s
Test Against Snapshots (17, 17) / Test	4m 40s
Build (windows-latest, 17) / Build	8m 53s
Test Against Snapshots (21-ea, 21) / Test	5m 6s
Deploy Docs	0s
Deploy Schema	0s
Deploy Artifacts	0s
Perform Release	-1s
Send Notification	8s
	27m 8s

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