ci: add release please (#353)

* Add basic release please configiguration

* Add changelog

* Update bootstrap SHA

Author: matthewelwell

.github/workflows/release-please.yml

@@ -0,0 +1,18 @@
+name: Update release PR
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: googleapis/release-please-action@v4
+        with:
+          token: ${{ secrets.RELEASE_PLEASE_GITHUB_TOKEN }}

.release-please-manifest.json

@@ -0,0 +1 @@
+{ ".":"9.3.2" }