ci(dependabot): update the configurations for dependabot alerts (#85)

Author: asadali214

.github/dependabot.yml

@@ -0,0 +1,15 @@
+version: 2
+updates:
+  - package-ecosystem: "nuget"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+    labels:
+      - "dependency update"
+    commit-message:
+      prefix: "build"
+      include: "scope"
+    open-pull-requests-limit: 10
+    rebase-strategy: "auto"
+    reviewers:
+      - "asadali214"