ci: modernize TagBot workflow (#124)

Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>

Author: sethaxen

.github/workflows/TagBot.yml

@@ -4,22 +4,6 @@ on:
     types:
       - created
   workflow_dispatch:
-    inputs:
-      lookback:
-        default: 3
-permissions:
-  actions: read
-  checks: read
-  contents: write
-  deployments: read
-  issues: read
-  discussions: read
-  packages: read
-  pages: read
-  pull-requests: read
-  repository-projects: read
-  security-events: read
-  statuses: read
 jobs:
   TagBot:
     if: github.event_name == 'workflow_dispatch' || github.actor == 'JuliaTagBot'
@@ -29,3 +13,4 @@ jobs:
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           ssh: ${{ secrets.DOCUMENTER_KEY }}
+          changelog_format: conventional