ci(hypatia-scan): wire FLEET_DISPATCH_TOKEN to its own secret

The FLEET_DISPATCH_TOKEN env var on submit-finding.sh was still sourcing
from the HYPATIA_DISPATCH_PAT placeholder. Wire to its dedicated secret
so the submit-finding script has the right token for dispatch operations.

Author: hyperpolymath

.github/workflows/hypatia-scan.yml

@@ -87,7 +87,7 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           FLEET_PUSH_TOKEN: ${{ secrets.FLEET_PUSH_TOKEN }}
-          FLEET_DISPATCH_TOKEN: ${{ secrets.HYPATIA_DISPATCH_PAT }}
+          FLEET_DISPATCH_TOKEN: ${{ secrets.FLEET_DISPATCH_TOKEN }}
           GITHUB_REPOSITORY: ${{ github.repository }}
           GITHUB_SHA: ${{ github.sha }}
         run: |
@@ -179,4 +179,4 @@ jobs:
               repo: context.repo.repo,
               issue_number: context.issue.number,
               body: comment
-            });
+            });