Increment beacon db version to 3.

src/gridcoin/beacon.h

@@ -544,13 +544,10 @@ class BeaconRegistry : public IContractHandler
     //! Version 0: <= 5.2.0.0
     //! Version 1: = 5.2.1.0
     //! Version 2: 5.2.1.0 with hotfix and > 5.2.1.0
-    //!
-    //! The current version of the beacon db is 2. No changes to the underlying storage have
-    //! occurred during the refactor to the registry db template, so this version remains unchanged
-    //! through 5.4.2.0+
+    //! Version 3: 5.4.5.5+
     //!
     BeaconRegistry()
-        : m_beacon_db(2)
+        : m_beacon_db(3)
     {
     };