Merge pull request #2585 from isuruf/py39

Announce dropping python 3.9

Author: h-vetinari

news/2025-08-18-python-3-9.md

@@ -0,0 +1,9 @@
+# Dropping Python 3.9 support in conda-forge
+
+With Python 3.9 reaching end-of-life in Oct 2025 and Python
+3.14 being released the same month, we have decided to drop
+3.9 from our default build matrix. This will be reflected
+in your feedstock configuration on the next rerender.
+The decision to drop support 1.5 months before its EOL is
+to avoid the strain on conda-forge CI while we add support
+for 3.14.