Update release notes

mwaskom · mwaskom · commit f191292f5554 · 2022-09-11T15:39:08.000-04:00
diff --git a/doc/whatsnew/v0.12.1.rst b/doc/whatsnew/v0.12.1.rst
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+v0.12.1 (Unreleased)
+--------------------
+
+- |Fix| Make :class:`objects.PolyFit` robust to missing data (:pr:`3010`).

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 +v0.12.1 (Unreleased)
 +--------------------
++
 +- |Fix| Make :class:`objects.PolyFit` robust to missing data (:pr:`3010`).