chore(dependabot): group pytest and also update actions

.github/dependabot.yml

@@ -1,22 +1,36 @@
+---
 version: 2
 updates:
-- package-ecosystem: pip
-  directory: "/"
-  schedule:
-    interval: weekly
-    day: friday
-    time: "12:00"
-    timezone: "Europe/Zurich"
-  commit-message:
-    prefix: chore
-    include: scope
-- package-ecosystem: docker
-  directory: "/"
-  schedule:
-    interval: weekly
-    day: friday
-    time: "12:00"
-    timezone: "Europe/Zurich"
-  commit-message:
-    prefix: chore
-    include: scope
+  - package-ecosystem: github-actions
+    directory: "/"
+    schedule:
+      interval: daily
+      time: "12:00"
+      timezone: "Europe/Zurich"
+
+  - package-ecosystem: pip
+    directory: "/"
+    schedule:
+      interval: daily
+      time: "12:00"
+      timezone: "Europe/Zurich"
+    commit-message:
+      prefix: chore
+      include: scope
+    open-pull-requests-limit: 15
+
+    groups:
+      pytest:
+        patterns:
+          - "pytest"
+          - "pytest-*"
+
+  - package-ecosystem: docker
+    directory: "/"
+    schedule:
+      interval: daily
+      time: "12:00"
+      timezone: "Europe/Zurich"
+    commit-message:
+      prefix: chore
+      include: scope