Create dependabot.yml

Created dependabot.yml in github actions to enable dependabot.
It will be updating the following dependencies:
- go modules in main package
- go modules in cmd package
- docker dependencies in the Dockerfile
- github actions

Signed-off-by: Viktor Kuznietsov <[email protected]>

.github/dependabot.yml

@@ -0,0 +1,26 @@
+version: 2
+updates:
+
+  # Automatic upgrade for go modules.
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "daily"
+
+  # Automatic upgrade for go modules of cmd package.
+  - package-ecosystem: "gomod"
+    directory: "/cmd"
+    schedule:
+      interval: "daily"
+
+  # Automatic upgrade for base images used in the Dockerfile
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "daily"
+
+  # Automatic upgrade for Github Actions
+  - package-ecosystem: "github-actions"
+    directory: "/" # means ".github/workflows"
+    schedule:
+      interval: "daily"