ci: [@dependabot] configure grouped version updates

- https://github.blog/changelog/2023-06-30-grouped-version-updates-for-dependabot-public-beta
- https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#groups

Signed-off-by: Lexus Drumgold <unicornware@flexdevelopment.llc>

Author: unicornware

.dictionary.txt

@@ -31,4 +31,5 @@ sepidx
 tscu
 unstub
 vates
+vitest
 yarnrc

.github/dependabot.yml

@@ -30,6 +30,26 @@ updates:
       prefix: build
       include: scope
     directory: /
+    groups:
+      conventional-changelog:
+        patterns:
+          - '@types/conventional-changelog'
+          - '@types/conventional-changelog-core'
+          - '@types/conventional-changelog-writer'
+          - '@types/conventional-recommended-bump'
+          - '@types/git-raw-commits'
+          - conventional-changelog
+          - conventional-changelog-conventionalcommits
+          - conventional-changelog-core
+          - conventional-changelog-writer
+          - conventional-recommended-bump
+      typescript-eslint:
+        patterns:
+          - '@typescript-eslint/*'
+      vitest:
+        patterns:
+          - '@vitest/*'
+          - vitest
     labels:
       - scope:dependencies
       - type:build