Adding dependabot update

Author: leandrodamascena

.github/dependabot.yml

@@ -0,0 +1,28 @@
+version: 2
+updates:
+  - package-ecosystem: "dotnet-sdk"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "wednesday"
+    ignore:
+      - dependency-name: "*"
+        update-types: 
+          - "version-update:semver-major"
+          - "version-update:semver-minor"
+  
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    commit-message:
+      prefix: chore
+      include: scope
+
+  - package-ecosystem: docker
+    directory: /docs
+    commit-message:
+      prefix: chore
+      include: scope
+    schedule:
+      interval: daily