Add release note template for 5.2.7

CHANGELOG.txt

@@ -1,6 +1,12 @@
 Changelog
 =========
 
+5.2.7 (xx.xx.xxxx) - IN DEVELOPMENT
+~~~~~~~~~~~~~~~~~~
+
+ * ...
+
+
 5.2.6 (11.07.2024)
 ~~~~~~~~~~~~~~~~~~
 

docs/releases/5.2.7.md

@@ -0,0 +1,17 @@
+# Wagtail 5.2.7 release notes - IN DEVELOPMENT
+
+_Unreleased_
+
+```{contents}
+---
+local:
+depth: 1
+---
+```
+
+## What's new
+
+
+### Bug fixes
+
+ * ...

docs/releases/index.rst

@@ -5,6 +5,7 @@ Release notes
    :maxdepth: 1
 
    upgrading
+   5.2.7
    5.2.6
    5.2.5
    5.2.4