ci: group dependabot alerts (runfinch#1586)

Signed-off-by: Arjun Raja Yogidas <arjunry@amazon.com>

Author: coderbirju

.github/dependabot.yaml

@@ -17,6 +17,11 @@ updates:
       patterns:
         - "github.com/docker/docker"
         - "github.com/docker/cli"
+    project-dependency:
+      exclude-patterns:
+        - "github.com/containerd/nerdctl/v2"
+        - "github.com/docker/docker"
+        - "github.com/docker/cli"
 - package-ecosystem: "github-actions"
   directory: "/"
   schedule: