Add mkdocs + devcontainers to dependabot (#1054)

Author: cristianrgreco

.github/dependabot.yml

@@ -70,3 +70,39 @@ updates:
       actions:
         patterns:
           - "*"
+
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    labels:
+      - "dependencies"
+      - "devcontainers"
+    groups:
+      dependencies:
+        patterns:
+          - "*"
+
+  - package-ecosystem: "docker-compose"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    labels:
+      - "dependencies"
+      - "docker_compose"
+    groups:
+      dependencies:
+        patterns:
+          - "*"
+
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    labels:
+      - "dependencies"
+      - "pip"
+    groups:
+      dependencies:
+        patterns:
+          - "*"