fix(release): E2E tests were failing

end2end-tests/cucumber-genesis/default.json

@@ -81,5 +81,9 @@
   ],
   "treasury_funder_pubkey": "FHNpKmJrUtusuvKPGomAygQqeiks98bdV6yD61Stb6vg",
   "ud": 1000,
-  "initial_monetary_mass": 3000
+  "initial_monetary_mass": 3000,
+  "current_block": {
+    "number": 0,
+    "medianTime": 1700000000
+  }
 }
\ No newline at end of file

end2end-tests/cucumber-genesis/wot.json

@@ -90,5 +90,9 @@
   ],
   "treasury_funder_pubkey": "FHNpKmJrUtusuvKPGomAygQqeiks98bdV6yD61Stb6vg",
   "ud": 1000,
-  "initial_monetary_mass": 4000
+  "initial_monetary_mass": 4000,
+  "current_block": {
+    "number": 0,
+    "medianTime": 1700000000
+  }
 }
\ No newline at end of file

node/src/chain_spec/gen_genesis_data.rs

@@ -1729,8 +1729,13 @@ fn get_genesis_input<P: Default + DeserializeOwned>(
         memmap2::Mmap::map(&file)
             .map_err(|e| format!("Error mmaping gen conf file `{}`: {}", config_file_path, e))?
     };
-    serde_yaml::from_slice::<GenesisInput<P>>(&bytes)
-        .map_err(|e| format!("Error parsing gen conf file: {}", e))
+    if config_file_path.ends_with(".json") {
+        serde_json::from_slice::<GenesisInput<P>>(&bytes)
+            .map_err(|e| format!("Error parsing JSON gen conf file: {}", e))
+    } else {
+        serde_yaml::from_slice::<GenesisInput<P>>(&bytes)
+            .map_err(|e| format!("Error parsing YAML gen conf file: {}", e))
+    }
 }
 
 fn get_genesis_migration_data() -> Result<GenesisMigrationData, String> {