fix(test): update metadata error assertions for new CLI

Update test assertions in `test_tx_metadata.py` to handle new error
messages from cardano-cli >= 10.11.1.1 ("expecting record key literal"),
while retaining compatibility with older cardano-node versions. This
ensures tests remain robust across different node/CLI versions.

Author: mkoura

cardano_node_tests/tests/test_tx_metadata.py

@@ -128,7 +128,8 @@ def test_tx_invalid_json_metadata(
             )
         str_err = str(excinfo.value)
         assert (
-            "Failed reading: satisfy" in str_err  # cardano-node < 8.7.0
+            "expecting record key literal" in str_err  # cardano-cli >= 10.11.1.1
+            or "Failed reading: satisfy" in str_err  # cardano-node < 8.7.0
             or "JSON parse error:" in str_err
         ), str_err
 
@@ -162,7 +163,8 @@ def test_build_tx_invalid_json_metadata(
             )
         str_err = str(excinfo.value)
         assert (
-            "Failed reading: satisfy" in str_err  # cardano-node < 8.7.0
+            "expecting record key literal" in str_err  # cardano-cli >= 10.11.1.1
+            or "Failed reading: satisfy" in str_err  # cardano-node < 8.7.0
             or "JSON parse error:" in str_err
         ), str_err