ci(release): Switch from action-prepare-release to Craft (#7631)

## Summary

This PR migrates from the deprecated `action-prepare-release` to the new
Craft GitHub Actions.

## Changes

- Migrated `.github/workflows/release.yml` to Craft reusable workflow
- Updated `.craft.yml` with `versioning.policy: calver`

## Documentation

See https://getsentry.github.io/craft/github-actions/ for more
information.

Author: BYK

.craft.yml

@@ -6,17 +6,19 @@ statusProvider:
   name: github
   config:
     contexts:
-      - 'build-amd64'
-      - 'build-arm64'
-      - 'assemble'
+    - 'build-amd64'
+    - 'build-arm64'
+    - 'assemble'
 targets:
-  - id: release
-    name: docker
-    source: ghcr.io/getsentry/snuba
-    target: getsentry/snuba
-  - id: latest
-    name: docker
-    source: ghcr.io/getsentry/snuba
-    target: getsentry/snuba
-    targetFormat: '{{{target}}}:latest'
-  - name: github
+- id: release
+  name: docker
+  source: ghcr.io/getsentry/snuba
+  target: getsentry/snuba
+- id: latest
+  name: docker
+  source: ghcr.io/getsentry/snuba
+  target: getsentry/snuba
+  targetFormat: '{{{target}}}:latest'
+- name: github
+versioning:
+  policy: calver

.github/workflows/release.yml

@@ -3,7 +3,7 @@ on:
   workflow_dispatch:
     inputs:
       version:
-        description: Version to release (optional)
+        description: Version to release (or "auto")
         required: false
       force:
         description: Force a release even when there are release-blockers (optional)
@@ -12,6 +12,10 @@ on:
     # We want the release to be at 9-10am Pacific Time
     # We also want it to be 1 hour before the on-prem release
     - cron: "0 17 15 * *"
+permissions:
+  contents: write
+  pull-requests: write
+
 jobs:
   release:
     runs-on: ubuntu-latest
@@ -28,7 +32,7 @@ jobs:
           token: ${{ steps.token.outputs.token }}
           fetch-depth: 0
       - name: Prepare release
-        uses: getsentry/action-prepare-release@v1
+        uses: getsentry/craft@v2
         env:
           GITHUB_TOKEN: ${{ steps.token.outputs.token }}
         with: