Update changelog for 2.7.1

Author: zorgiepoo

CHANGELOG

@@ -1,3 +1,11 @@
+# 2.7.1
+
+* Fix typo in NN localisation (#2694) (Sjur N Moshagen)
+* Fix compiler warnings for Xcode 16.3 (#2709) (Zorg)
+* Fix Sparkle not building when SPARKLE_COPY_LOCALIZATIONS=0 (#2707) (Zorg)
+* Fix release notes constraints when compiled with macOS 26 SDK (#2730) (Zorg)
+* Fix reserved identifier warnings for Xcode 26 (#2729) (Zorg)
+
 # 2.7.0
 
 * Unarchiver / validation improvements (Zorg)