chore(dev): update release-drafter usage (#410)

- [x] remove unused release-drafter config
- [x] update permissions for jobs that invoke reusable release-drafter workflows
- [x] switch labeler workflow to use separate reusable workflow

refs:
- cpp-linter/.github#71
- cpp-linter/.github#74

Author: 2bndy5

.github/release-drafter.yml

@@ -1,10 +1,15 @@
-name: PR Autolabeler
+name: PR Auto-labeler
 
 on:
-  # pull_request event is required for autolabeler
+  # pull_request event is required for auto-labeler
   pull_request:
     types: [opened, reopened, synchronize]
 
+permissions: {}
+
 jobs:
   draft-release:
-    uses: cpp-linter/.github/.github/workflows/release-drafter.yml@main
+    permissions:
+      contents: read
+      pull-requests: write
+    uses: cpp-linter/.github/.github/workflows/pr-labeler.yml@main

.github/workflows/labeler.yml

@@ -6,6 +6,11 @@ on:
       - "main"
   workflow_dispatch:
 
+permissions: {}
+
 jobs:
   draft-release:
+    permissions:
+      contents: write
+      pull-requests: read
     uses: cpp-linter/.github/.github/workflows/release-drafter.yml@main