Added dependabot

* Added dependabot to keep go dependencies & actions updated.

Signed-off-by: Neo2308 <pradha.krishna.cse17@itbhu.ac.in>

Author: Neo2308

.github/dependabot.yaml

@@ -0,0 +1,11 @@
+version: 2
+updates:
+- package-ecosystem: "gomod"
+  directory: "/"
+  schedule:
+    interval: "daily"
+  open-pull-requests-limit: 10
+- package-ecosystem: "github-actions"
+  directory: "/"
+  schedule:
+    interval: "weekly"