Release prep v3.8.4

Author: ksunden

doc/_static/switcher.json

@@ -11,8 +11,8 @@
     },
     {
         "name": "3.7",
-        "version": "3.7.3",
-        "url": "https://matplotlib.org/3.7.3/"
+        "version": "3.7.5",
+        "url": "https://matplotlib.org/3.7.5/"
     },
     {
         "name": "3.6",

doc/users/release_notes.rst

@@ -22,6 +22,7 @@ Version 3.8
     ../api/prev_api_changes/api_changes_3.8.1.rst
     ../api/prev_api_changes/api_changes_3.8.0.rst
     github_stats.rst
+    prev_whats_new/github_stats_3.8.3.rst
     prev_whats_new/github_stats_3.8.2.rst
     prev_whats_new/github_stats_3.8.1.rst
     prev_whats_new/github_stats_3.8.0.rst