TEST: Update reference tests

Author: ubaidsk

tests/reference/asr-test_operator_01-0f232bf.json

@@ -0,0 +1,13 @@
+{
+    "basename": "asr-test_operator_01-0f232bf",
+    "cmd": "lpython --show-asr --no-color {infile} -o {outfile}",
+    "infile": "tests/errors/test_operator_01.py",
+    "infile_hash": "fe3fc1c23c2f63265b758b4d5d757943c1462811c5bc5e7a14abb64d",
+    "outfile": null,
+    "outfile_hash": null,
+    "stdout": null,
+    "stdout_hash": null,
+    "stderr": "asr-test_operator_01-0f232bf.stderr",
+    "stderr_hash": "d291f8cc0413a1d9a1f4450493d17790ceec00cad791cdc4d1283161",
+    "returncode": 2
+}

tests/reference/asr-test_operator_01-0f232bf.stderr

@@ -0,0 +1,5 @@
+semantic error: Unary operator '-' not supported for type A
+ --> tests/errors/test_operator_01.py:9:11
+  |
+9 |     print(-a)
+  |           ^^