[BUG] Only one comment is posted by the bot in case of multiple deployment workflows

### Action config

I have 2 workflows:

One for "regular" PR previews

``` yml
name: Deploy to Firebase Hosting on PR

on: [pull_request]

concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
cancel-in-progress: true

jobs:
build_and_preview:
if: ${{ !github.event.pull_request.draft }}
name: Build the app and deploy to Firebase Hosting (PR preview)
runs-on: ubuntu-20.04
steps:
- name: Checkout code
uses: actions/checkout@v2

- name: Build
uses: ./.github/actions/init
with:
command: npm run build:development
NPM_TOKEN: ${{secrets.NPM_TOKEN}}

- name: Deploy
uses: FirebaseExtended/action-hosting-deploy@v0
with:
expires: 30d
channelId: PR-${{ github.event.number }}
repoToken: ${{ secrets.GITHUB_TOKEN }}
firebaseServiceAccount: ${{ secrets.FIREBASE_SERVICE_ACCOUNT_CM_DEV_D0EC1 }}
projectId: MY_PROJECT_ID

```

One for RC PR previews

``` yml
name: Deploy to Firebase Hosting on RC PR

on:
pull_request:
branches:
- master

concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
cancel-in-progress: true

jobs:
build_and_preview:
if: ( ${{ !github.event.pull_request.draft }} ) && ( ${{contains(github.event.pull_request.title, 'RC')}} )
name: Build the app and deploy to Firebase Hosting (RC)
runs-on: ubuntu-20.04
steps:
- name: Checkout code
uses: actions/checkout@v2

- name: Build
uses: ./.github/actions/init
with:
command: npm run build:production
NPM_TOKEN: ${{secrets.NPM_TOKEN}}

- name: Deploy
uses: FirebaseExtended/action-hosting-deploy@v0
with:
expires: 30d
channelId: RC-${{ github.event.number }}
repoToken: ${{ secrets.GITHUB_TOKEN }}
firebaseServiceAccount: ${{ secrets.FIREBASE_SERVICE_ACCOUNT_CM_PROD_C42CC }}
projectId: MY_PROJECT_ID

```

### Error message

There's no error message

### Expected behavior

If both actions run then I would expect the bot to post 2 comments with the PR preview link.

### Actual behavior

There's only one comment posted.