Update master for stable/2024.1

Add file to the reno documentation build to show release notes for
stable/2024.1.

Use pbr instruction to increment the minor version number
automatically so that master versions are higher than the versions on
stable/2024.1.

Sem-Ver: feature
Change-Id: I6e25de71b55d37a9d0492e65751ddc73c6a6dbdc

releasenotes/source/2024.1.rst

+===========================
+2024.1 Series Release Notes
+===========================
+
+.. release-notes::
+   :branch: stable/2024.1

releasenotes/source/index.rst

@@ -8,6 +8,7 @@ Contents
    :maxdepth: 2
 
    unreleased
+   2024.1
    2023.2
    2023.1
    zed