group eslint upgrades together into single PR. (#2735)

* group eslint upgrades together into single PR.

* pr feedback

Author: sobolk

.github/dependabot.yml

@@ -25,6 +25,12 @@ updates:
       smithy:
         patterns:
           - '@smithy/*'
+      eslint:
+        patterns:
+          - '@shopify/eslint-plugin'
+          - '@typescript-eslint/*'
+          - 'eslint'
+          - 'eslint-*'
     # Ignore updates to certain dependencies.
     # See: https://docs.github.com/en/code-security/dependabot/working-with-dependabot/dependabot-options-reference#ignore--
     ignore: