ci(release): Switch from action-prepare-release to Craft (#831)

This PR migrates from the deprecated action-prepare-release to the new
Craft GitHub Actions (reusable workflow or composite action).

Changes:
- Migrate .github/workflows/release.yml to Craft reusable workflow

Author: BYK

.github/workflows/changelog-preview.yml

@@ -0,0 +1,18 @@
+name: Changelog Preview
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+      - edited
+      - labeled
+      - unlabeled
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  changelog-preview:
+    uses: getsentry/craft/.github/workflows/changelog-preview.yml@v2
+    secrets: inherit

.github/workflows/release.yml

@@ -3,14 +3,18 @@ on:
   workflow_dispatch:
     inputs:
       version:
-        description: Version to release
-        required: true
+        description: Version to release (or "auto")
+        required: false
       force:
         description: Force a release even when there are release-blockers (optional)
         required: false
       merge_target:
         description: Target branch to merge into. Uses the default branch as a fallback (optional)
         required: false
+permissions:
+  contents: write
+  pull-requests: write
+
 jobs:
   release:
     runs-on: ubuntu-latest
@@ -27,7 +31,7 @@ jobs:
           token: ${{ steps.token.outputs.token }}
           fetch-depth: 0
       - name: Prepare release
-        uses: getsentry/action-prepare-release@v1
+        uses: getsentry/craft@c6e2f04939b6ee67030588afbb5af76b127d8203 # v2
         env:
           GITHUB_TOKEN: ${{ steps.token.outputs.token }}
         with: