chore: update libxrpl (#1943)

conanfile.py

@@ -29,7 +29,7 @@ class Clio(ConanFile):
         'protobuf/3.21.9',
         'grpc/1.50.1',
         'openssl/1.1.1u',
-        'xrpl/2.4.0-b3',
+        'xrpl/2.4.0-rc4',
         'zlib/1.3.1',
         'libbacktrace/cci.20210118'
     ]

src/data/AmendmentCenter.hpp

@@ -134,7 +134,9 @@ struct Amendments {
     REGISTER(Credentials);
     REGISTER(DynamicNFT);
     REGISTER(PermissionedDomains);
+    REGISTER(fixInvalidTxFlags);
     REGISTER(fixFrozenLPTokenTransfer);
+    REGISTER(DeepFreeze);
 
     // Obsolete but supported by libxrpl
     REGISTER(CryptoConditionsSuite);