Group AWS dependabot updates

Reduce the montly PR updates by grouping the AWS Go modules.

Signed-off-by: SuperQ <superq@gmail.com>

Author: SuperQ

.github/dependabot.yml

@@ -4,3 +4,7 @@ updates:
     directory: "/"
     schedule:
       interval: "monthly"
+    groups:
+      aws:
+        patterns:
+          - "github.com/aws/*"