chore: split typescript into its own dependabot group (#303)

* chore: split typescript into its own dependabot group

TypeScript major version bumps can have peer dependency conflicts with
eslint plugins and other tooling. Splitting it into its own group
prevents it from blocking unrelated dependency updates.

* fix: remove duplicate typescript group from workspace-server dependabot config

The workspace-server/package.json doesn't list typescript as a dependency,
so the group wouldn't match anything. The root-level typescript group
already handles it.

* fix: reorder dependabot groups so typescript matches before catch-all

Placing the specific typescript group before the npm-root wildcard
group eliminates the need for exclude-patterns and is more maintainable
when adding future specific groups.

Author: allenhutchison

.github/dependabot.yml

@@ -6,6 +6,9 @@ updates:
       interval: 'weekly'
     open-pull-requests-limit: 5
     groups:
+      typescript:
+        patterns:
+          - 'typescript'
       npm-root:
         patterns:
           - '*'