fix: adjust for release-please v4

Author: DrPsychick

.github/workflows/release-please.yml

@@ -20,14 +20,9 @@ jobs:
       - uses: google-github-actions/release-please-action@v4
         id: release
         with:
-          release-type: go
           # to create PRs and trigger GitHub workflows, requires a PAT
           token: ${{ secrets.PAT_GITHUB_TOKEN }}
-          # changelog-notes-type: github
-          # prerelease: true
-          include-v-in-tag: true
-          # Only check the last 50 commits to avoid rate limiting
-          commit-search-depth: 50
+          skip-github-release: true
 
       - run: echo $JSON
         name: Release Please Output Info

release-please-config.json renamed to release-please-config.json

@@ -1,12 +1,14 @@
 {
+  "changelog-type": "github",
   "packages": {
     "mailu-operator": {
       "package-name": "mailu-operator",
       "changelog-path": "CHANGELOG.md",
       "release-type": "go",
       "bump-minor-pre-major": false,
       "bump-patch-for-minor-pre-major": false,
-      "include-v-in-tag": true
+      "include-v-in-tag": true,
+      "prerelease": true
     }
   },
   "release-search-depth": 100,