Normalize parity stdout line endings before hashing

Windows CPython writes CRLF from the probe subprocesses, which changed the
sha256 of otherwise byte-identical PCM output and failed every Windows CI
job. The committed oracle hashes are over LF text, so normalize before
hashing.

Author: bdbarnett

tests/parity/verify_effects.py

@@ -22,7 +22,7 @@
     sys.stderr.buffer.write(result.stdout)
     sys.stderr.buffer.write(result.stderr)
     raise SystemExit(result.returncode)
-actual = hashlib.sha256(result.stdout).hexdigest()
+actual = hashlib.sha256(result.stdout.replace(b"\r\n", b"\n")).hexdigest()
 expected = fixture["cpython_stdout_sha256"]
 if actual != expected:
     raise SystemExit(

tests/parity/verify_streaming.py

@@ -25,7 +25,8 @@
         sys.stderr.buffer.write(result.stdout)
         sys.stderr.buffer.write(result.stderr)
         raise SystemExit(result.returncode)
-    actual = hashlib.sha256(result.stdout).hexdigest()
+    actual = hashlib.sha256(
+        result.stdout.replace(b"\r\n", b"\n")).hexdigest()
     expected = fixture[f"{name}_stdout_sha256"]
     if actual != expected:
         raise SystemExit(