ci: add spec type in conventional-pr-title (cometbft#2191)

Closes cometbft#2111

.github/workflows/conventional-pr-title.yml

@@ -19,6 +19,18 @@ jobs:
  id: lint_pr_title
  env:
  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+ types: |
+ feat
+ fix
+ build
+ chore
+ ci
+ docs
+ refactor
+ perf
+ test
+ revert
+ spec
 
  - uses: marocchino/sticky-pull-request-comment@v2
  # When the previous steps fails, the workflow would stop. By adding this
@@ -40,7 +52,7 @@ jobs:
  General format: `type(scope): msg`
  Breaking change: `type(scope)!: msg`
  Multi-scope change: `type: msg`
- Types: `feat`, `fix`, `build`, `chore`, `ci`, `docs`, `refactor`, `perf`, `test`, `revert`.
+ Types: `feat`, `fix`, `build`, `chore`, `ci`, `docs`, `refactor`, `perf`, `test`, `revert`, `spec`.
  Example: `fix(cmd/cometbft/commands/debug): execute p.Signal only when p is not nil`
 
  # Delete a previous comment when the issue has been resolved