[5.0.x] Added stub release notes and release date for 5.0.10, and 4.2.17.

Backport of 2544c1585473c1e82dab1274b52052744f97ca72 from main.

docs/releases/4.2.17.txt

@@ -0,0 +1,8 @@
+===========================
+Django 4.2.17 release notes
+===========================
+
+*December 4, 2024*
+
+Django 4.2.17 fixes one security issue with severity "high" and one security
+issue with severity "moderate" in 4.2.16.

docs/releases/5.0.10.txt

@@ -0,0 +1,8 @@
+===========================
+Django 5.0.10 release notes
+===========================
+
+*December 4, 2024*
+
+Django 5.0.10 fixes one security issue with severity "high" and one security
+issue with severity "moderate" in 5.0.9.

docs/releases/index.txt

@@ -25,6 +25,7 @@ versions of the documentation contain the release notes for any later releases.
 .. toctree::
    :maxdepth: 1
 
+   5.0.10
    5.0.9
    5.0.8
    5.0.7
@@ -42,6 +43,7 @@ versions of the documentation contain the release notes for any later releases.
 .. toctree::
    :maxdepth: 1
 
+   4.2.17
    4.2.16
    4.2.15
    4.2.14