feat(tests): add Conway era tx body and update CLI test

- Add `test_tx_metadata_both_tx_conway.body` with Conway era transaction
  in CDDL format for testing.
- Update `TestCLI` in `test_cli.py` to use the new Conway era tx body
  file in CLI tests.

Author: mkoura

cardano_node_tests/tests/data/test_tx_metadata_both_tx_conway.body

@@ -0,0 +1,5 @@
+{
+    "type": "Tx ConwayEra",
+    "description": "Ledger Cddl Format",
+    "cborHex": "84a400d901028182582009dc7193a34e99ec75abb398ce6dad49d6a5d403bead3bc5bafdc03a364859f800018182581d60928faa7ebf79cb8ccdcf618ca631c4653a6e35bb02b792e98efa07cd1a08ee035f021a0002ce2107582083f9c606d3db46759c0ffb0b1f12fc8fd03460de7a4099f9ee797cdbb790beafa0f5d90103a100a50163666f6f0263626172036362617a056763617264616e6f066572756c6573"
+}

cardano_node_tests/tests/test_cli.py

@@ -39,6 +39,7 @@ class TestCLI:
     """Tests for cardano-cli."""
 
     TX_BODY_FILE = DATA_DIR / "test_tx_metadata_both_tx.body"
+    TX_BODY_FILE_CONWAY = DATA_DIR / "test_tx_metadata_both_tx_conway.body"
     TX_FILE = DATA_DIR / "test_tx_metadata_both_tx.signed"
     TX_BODY_OUT_JSON = DATA_DIR / "test_tx_metadata_both_tx_body_json.out"
     TX_OUT_JSON = DATA_DIR / "test_tx_metadata_both_tx_json.out"
@@ -117,7 +118,7 @@ def test_calculate_min_fee(self, cluster: clusterlib.ClusterLib):
                         "--protocol-params-file",
                         str(cluster.pparams_file),
                         "--tx-body-file",
-                        str(self.TX_BODY_FILE),
+                        str(self.TX_BODY_FILE_CONWAY),
                         "--witness-count",
                         "1",
                         "--tx-in-count",