Configure group dependencies for docusaurous (k3s-io#230)

Signed-off-by: Derek Nola <derek.nola@suse.com>

Author: dereknola

.github/dependabot.yml

@@ -9,3 +9,7 @@ updates:
     directory: "/" # Location of package manifests
     schedule:
       interval: "weekly"
+    groups:
+      docusaurous-dependencies:
+        patterns:
+          - "@docusaurus/*"