update token to have project board access and document

Author: j-wags

.github/workflows/lifecycle-error-cycle.yml

@@ -48,7 +48,7 @@ jobs:
 
       - name: Run lifecycle processing script
         env:
-          GH_TOKEN: ${{ secrets.GH_DANGERBOT_TOKEN_LIMITED }}
+          GH_TOKEN: ${{ secrets.QCA_DATASET_SUBMISSION_PAT }}
           QCA_USER: ${{ secrets.QCA_USER }}
           QCA_KEY: ${{ secrets.QCA_KEY }}
         run: |

management/README.md

@@ -0,0 +1,7 @@
+For the GitHub automation to read and update the Dataset Tracking project board, it's necessary to make a token available to the automation with at least 
+* org:project:(read and write) access
+* repo:pull request:(read and write) access
+
+This token is accessed via the `QCA_DATASET_SUBMISSION_PAT` secret.
+
+These tokens must be renewed periodically as GH only gives them a max lifetime of 1 year.