chore: add release workflow and migrate config to Increase/release-please fork (#1410)

Author: Mattt

.github/workflows/release.yml

@@ -0,0 +1,23 @@
+name: release
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/create-github-app-token@v3
+        id: app-token
+        with:
+          client-id: ${{ vars.INCREASE_RELEASES_CLIENT_ID }}
+          private-key: ${{ secrets.INCREASE_RELEASES_PRIVATE_KEY }}
+      - uses: actions/checkout@v6
+      - uses: Increase/release-please@v1
+        with:
+          token: ${{ steps.app-token.outputs.token }}
+          changes-branch: next

release-please-config.json

@@ -2,14 +2,13 @@
   "packages": {
     ".": {}
   },
-  "$schema": "https://raw.githubusercontent.com/stainless-api/release-please/main/schemas/config.json",
+  "$schema": "https://raw.githubusercontent.com/Increase/release-please/main/schemas/config.json",
   "include-v-in-tag": true,
   "include-component-in-tag": false,
   "versioning": "prerelease",
   "prerelease": true,
   "bump-minor-pre-major": true,
   "bump-patch-for-minor-pre-major": false,
-  "pull-request-header": "Automated Release PR",
   "pull-request-title-pattern": "release: ${version}",
   "changelog-sections": [
     {