Update release notes

Author: kean

RELEASE-NOTES.txt

@@ -3,6 +3,8 @@
 * [**] Reader: Add "Freshly Pressed" to Discover [#24828]
 * [**] Intelligence: Expand AI-based features to more locales [#25034]
 * [*] Fix previewing posts on WordPress.com atomic sites [#25045]
+* [*] Stats: Add days/weeks/months/years picker for bar and line charts [#25093]
+* [*] Stats: Fix an issue with weekly data for the comparison period sometimes not being shown correctly [#25093]
 
 26.5
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