[Automation] Bump product version numbers (#3204)

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Co-authored-by: elastic-observability-automation[bot] <180520183+elastic-observability-automation[bot]@users.noreply.github.com>

Author: elastic-observability-automation[bot]

config/versions.yml

@@ -158,7 +158,7 @@ versioning_systems:
     current: 9.3.4
   elasticsearch-client-dotnet:
     base: 9.0
-    current: 9.3.5
+    current: 9.3.6
   elasticsearch-client-php:
     base: 9.0
     current: 9.3.0