Fix regression to Java FIT performer

Change-Id: I7e5fa32e00673404d2a6247cf14457ed6653d81c
Reviewed-on: https://review.couchbase.org/c/couchbase-jvm-clients/+/213514
Reviewed-by: Graham Pople <[email protected]>
Tested-by: Build Bot <[email protected]>

Author: programmatix

java-fit-performer/src/main/java/com/couchbase/JavaPerformer.java

@@ -158,7 +158,7 @@ protected void customisePerformerCaps(PerformerCapsFetchResponse.Builder respons
             }
         }
 
-        var supported = new CoreTransactionsSupportedExtensions();
+        var supported = CoreTransactionsSupportedExtensions.ALL;
         var protocolVersion = supported.protocolMajor + "." + supported.protocolMinor;
 
         response.setTransactionsProtocolVersion(protocolVersion);