ci: hardcode App ID on central workflow

Although I would have preferred to keep this a secret, since the application is private to our organization, I decided to hardcode the App ID on the central workflow to avoid having to manage another secret on all repos besides the private key of the app. This way, in the eventuality that we need to redo the app, we won't need to change both secrets on all the repositories, so we cut the maintenance in half.

Author: lentidas

.github/workflows/pr-issues-project.yaml

@@ -10,9 +10,6 @@ name: "pr-issues-project"
 on:
   workflow_call:
     secrets:
-      PROJECT_APP_ID:
-        description: "GitHub App ID for the DevOps Stack Project app"
-        required: true
       PROJECT_APP_PRIVATE_KEY:
         description: "GitHub App private key for the DevOps Stack Project app"
         required: true
@@ -35,7 +32,7 @@ jobs:
       id: generate_token
       uses: tibdex/github-app-token@v1
       with:
-        app_id: ${{ secrets.PROJECT_APP_ID }}
+        app_id: 322306
         private_key: ${{ secrets.PROJECT_APP_PRIVATE_KEY }}
 
     - name: Add PR or issue to DevOps Stack project board