Not updating `.release-please-manifest.json`

We use `release-please` to create releases for the Puppeteer project. The current structure is a mono repo so we use a [configuration file ](https://github.com/puppeteer/puppeteer/blob/main/release-please-config.json) to express this.
This works well for the 3 packages that depend on each other `puppeteer`, `puppeteer-core`, and `@puppeteer/browsers`.
But for the last one `@puppeteer/ng-schematics` we are seeing issue that the release does not update [`.release-please-manifest.json`](https://github.com/puppeteer/puppeteer/blob/main/.release-please-manifest.json).

This can be observed on the latest PR - https://github.com/puppeteer/puppeteer/pull/11543.
If we do merge this PR without updating the manifest manually `release-please` will open a new one as the version differs with the manifest file. Observed:
Initial - https://github.com/puppeteer/puppeteer/pull/11496
A second one - https://github.com/puppeteer/puppeteer/pull/11508

The issue is not consistent. It doesn't fail all the time as you can see from https://github.com/puppeteer/puppeteer/pull/11488

#### Environment details

- GitHub App

#### Steps to reproduce

1. Have not reproduced locally, but happy to follow up if instruction are provided.