chore: use new Pulumi and GitHub tokens managed by this repo in CI

Author: cdunster

.github/workflows/deploy.yaml

@@ -16,5 +16,5 @@ jobs:
           command: up
           stack-name: holochain/github
         env:
-          PULUMI_ACCESS_TOKEN: ${{ secrets.PULUMI_ACCESS_TOKEN }}
-          GITHUB_TOKEN: ${{ secrets.HRA_GITHUB_TOKEN }}
+          PULUMI_ACCESS_TOKEN: ${{ secrets.HRA2_PULUMI_ACCESS_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.HRA2_GITHUB_TOKEN }}

.github/workflows/preview.yaml

@@ -24,7 +24,7 @@ jobs:
           comment-on-pr: true
           diff: true
         env:
-          PULUMI_ACCESS_TOKEN: ${{ secrets.PULUMI_ACCESS_TOKEN }}
+          PULUMI_ACCESS_TOKEN: ${{ secrets.HRA2_PULUMI_ACCESS_TOKEN }}
   ci_pass:
     if: always()
     needs: