chore: configure Dependabot for GitHub Actions and Python

Added configuration for GitHub Actions and Python packages updates with weekly schedule.

Author: stanislaw

.github/dependabot.yml

@@ -0,0 +1,24 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
+      day: friday
+    groups:
+      github-actions:
+        patterns: ["*"]
+    commit-message:
+      prefix: chore
+  - package-ecosystem: pip
+    directory: /
+    schedule:
+      interval: weekly
+      day: friday
+    allow:
+      - dependency-type: development
+    groups:
+      python-packages:
+        patterns: ["*"]
+    commit-message:
+      prefix: chore