dependabot: monitor Pythons deps as well

Signed-off-by: Luchesar ILIEV <[email protected]>

.github/dependabot.yml

@@ -6,6 +6,14 @@ updates:
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      interval: "monthly"
+      interval: "weekly"
+    assignees:
+      - "kerberizer"
+
+  # Maintain dependencies for Python
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "weekly"
     assignees:
       - "kerberizer"