Update defectdojo/defectdojo-nginx Docker tag to v2.27.0

This MR contains the following updates:

Package	Type	Update	Change
defectdojo/defectdojo-nginx	ironbank-docker	minor	2.26.4 -> 2.27.0
defectdojo/defectdojo-nginx		minor	2.26.4 -> 2.27.0
defectdojo/defectdojo-nginx	stage	minor	2.26.4 -> 2.27.0

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