Merge pull request #3931 from marta-lokhova/bump_ov_version_to_30

Bump overlay version

Reviewed-by: sisuresh

src/main/Config.cpp

@@ -129,7 +129,7 @@ Config::Config() : NODE_SEED(SecretKey::random())
     LEDGER_PROTOCOL_MIN_VERSION_INTERNAL_ERROR_REPORT = 18;
 
     OVERLAY_PROTOCOL_MIN_VERSION = 27;
-    OVERLAY_PROTOCOL_VERSION = 29;
+    OVERLAY_PROTOCOL_VERSION = 30;
 
     VERSION_STR = STELLAR_CORE_VERSION;