Try and group dependabot PRs

.github/dependabot.yml

@@ -11,6 +11,27 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
+      day: "sunday"
+      time: "03:00"
+      timezone: "Europe/London"
+    groups:
+      # Bundle updates in the pyproject.toml [tool.poetry.dependencies] section
+      production-dependencies:
+        dependency-type: "production"
+      # Should bundle updates in the pyproject.toml [tool.poetry.groups.*] sections
+      # but leave the sphinx ecosystem alone
+      development-dependencies:
+        dependency-type: "development"
+        exclude-patterns:
+        - "sphinx*"
+      sphinx: 
+      # Separately allow it to move sphinx updates within minor versions
+        applies-to: version-updates
+        patterns:
+        - "sphinx*"
+        update-types:
+        - "minor"
+        - "patch"
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:

docs/source/conf.py

@@ -204,7 +204,7 @@ class MyReferenceStyle(AuthorYearReferenceStyle):
 
 html_theme_options = {
     "logo_only": False,
-    "display_version": True,
+    "version_selector": True,
     "prev_next_buttons_location": "top",
     "style_external_links": False,
     "style_nav_header_background": "grey",