Approve current output and fix the approval test reporter

Approved the 30 day fixture output as-is so there is a baseline before
refactoring. Conjured Mana Cake is still wrong here, that changes later.

The approval test was also crashing with "no reporter configuration"
instead of showing a diff. pytest-approvaltests 0.2.4 doesn't work with
approvaltests 19, so pass PythonNativeReporter directly.

python/tests/test_gilded_rose_approvals.py

@@ -1,9 +1,16 @@
 import io
 import sys
 
-from approvaltests import verify
+from approvaltests import Options, verify
+from approvaltests.reporters import PythonNativeReporter
+
 from texttest_fixture import main
 
+# Print the diff to stdout on a mismatch rather than launching a GUI diff tool,
+# so the test behaves identically locally, headless and in CI.
+REPORTER = PythonNativeReporter()
+
+
 def test_gilded_rose_approvals():
     orig_sysout = sys.stdout
     try:
@@ -15,7 +22,8 @@ def test_gilded_rose_approvals():
     finally:
         sys.stdout = orig_sysout
 
-    verify(answer)
+    verify(answer, options=Options().with_reporter(REPORTER))
+
 
 if __name__ == "__main__":
-    test_gilded_rose_approvals()
+    test_gilded_rose_approvals()