chore: separate eslint and eslint-plugins in dependabot groups (#143)

Co-authored-by: joshjohanning-repo-settings-sync[bot] <237077283+joshjohanning-repo-settings-sync[bot]@users.noreply.github.com>

Author: joshjohanning-repo-settings-sync[bot]

.github/dependabot.yml

@@ -35,6 +35,7 @@ updates:
         patterns:
           - '@actions/*'
           - '@octokit/*'
-      eslint:
+      eslint-plugins:
         patterns:
-          - 'eslint*'
+          - 'eslint-plugin-*'
+          - 'eslint-config-*'