Add NEWS entry

Author: sideeffect42

Misc/NEWS.d/next/Core_and_Builtins/2026-04-19-20-22-00.gh-issue-148773.LBukI9.rst

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+Fixes a bug in :func:`print` which could result in a hangup signal (``SIGHUP``)
+being sent to the user session under certain circumstances when printing an
+empty string to unbuffered stdout, e.g. if ``python3 -u`` is used or the
+:envvar:`PYTHONUNBUFFERED` environment variable is set.