Update operator-chart-version in latest-snapshot docs to 5.15.0-snapshot

Signed-off-by: devOpsHelm <devopshelm@hazelcast.com>

docs/antora.yml

@@ -10,10 +10,10 @@ asciidoc:
   attributes:
     # The full major.minor.patch version, which is used as a variable in the docs for things like download links
     full-version: 'latest-snapshot'
-    operator-chart-version: '5.14.0-snapshot'
+    operator-chart-version: '5.15.0-snapshot'
     page-toclevels: 1@
     # page-latest-supported versions are used for sample YAML files.
-    page-latest-supported-mc: '5.5.0'
-    page-latest-supported-hazelcast: '5.5.0'
+    page-latest-supported-mc: '5.6.0'
+    page-latest-supported-hazelcast: '5.5.2'
 nav:
 - modules/ROOT/nav.adoc