ci: regen release notes with GH API (#36098)

[skip ci]

.github/workflows/release_notes.yml

@@ -0,0 +1,38 @@
+# This action:
+#
+# 1. Generates release notes using github API.
+# 2. Strips unnecessary info like chore/style etc from notes.
+# 3. Updates release info.
+
+# This action needs to be maintained on all branches that do releases.
+
+name: 'Release Notes'
+
+on:
+  workflow_dispatch:
+    inputs:
+      tag_name:
+        description: 'Tag of release like v13.0.0'
+        required: true
+        type: string
+  release:
+    types: [released]
+
+permissions:
+  contents: read
+
+jobs:
+  regen-notes:
+    name: 'Regenerate release notes'
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Update notes
+      run: |
+        NEW_NOTES=$(gh api --method POST -H "Accept: application/vnd.github+json"  /repos/frappe/frappe/releases/generate-notes  -f tag_name=$RELEASE_TAG | jq -r '.body' | sed  -E '/^\* (chore|ci|test|docs|style)/d' )
+        RELEASE_ID=$(gh api -H "Accept: application/vnd.github+json" /repos/frappe/frappe/releases/tags/$RELEASE_TAG | jq -r '.id')
+        gh api --method PATCH -H "Accept: application/vnd.github+json" /repos/frappe/frappe/releases/$RELEASE_ID -f body="$NEW_NOTES"
+
+      env:
+        GH_TOKEN: ${{ secrets.RELEASE_TOKEN }}
+        RELEASE_TAG: ${{ github.event.inputs.tag_name || github.event.release.tag_name }}