[0.16.3] Add release notes for lighthouse PR #1439

Release notes for submariner-io/lighthouse#1439

Signed-off-by: Tom Pantelis <[email protected]>

src/content/community/releases/_index.en.md

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+## v0.16.3
+
+* Fixed an issue in Service Discovery which caused an erroneous ServiceExport Conflict status condition to be reported.
+
 ## v0.16.2
 
 * Fixed known issue in v0.16.1 where Globalnet did not work properly if deployed using the Helm charts.
 * Fixed known issue in v0.16.1 where `subctl verify` with Globalnet installed may fail with a panic.
-
+* 
 ## v0.16.1
 
 * The Globalnet controller now employs Kubernetes leader election to ensure proper continuity during fail-over and avoid potential race