Update Helm release nextcloud to v3.3.3

This MR contains the following updates:

Package	Update	Change
nextcloud (source)	minor	3.1.2 -> 3.3.3

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CHANGELOG.md

@@ -3,6 +3,7 @@
 ## [0.15.5] - 2022-11-09
 
 * Update nextcloud helm chart to 3.3.3.
+* Update onlyoffice app to 7.6.8.
 
 ## [0.15.4] - 2022-11-09