feat: Add Dependabot for automatic updates

Author: shymega

.github/dependabot.yml

@@ -0,0 +1,22 @@
+version: 2
+updates:
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    commit-message:
+      prefix: "chore(pip-deps)"
+    groups:
+      pip-deps:
+        patterns:
+          - "*"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    commit-message:
+      prefix: "chore(ci-deps)"
+    groups:
+      gh-actions-deps:
+        patterns:
+          - "*"