Added stub release notes for 5.1.7.

docs/releases/5.1.7.txt

@@ -0,0 +1,12 @@
+==========================
+Django 5.1.7 release notes
+==========================
+
+*Expected March 5, 2025*
+
+Django 5.1.7 fixes several bugs in 5.1.6.
+
+Bugfixes
+========
+
+* ...

docs/releases/index.txt

@@ -39,6 +39,7 @@ versions of the documentation contain the release notes for any later releases.
 .. toctree::
    :maxdepth: 1
 
+   5.1.7
    5.1.6
    5.1.5
    5.1.4