Fix variable name

Author: koppor

.github/workflows/on-pr-closed.yml

@@ -45,7 +45,7 @@ jobs:
           bodyRegexFlags: 'i'
           bodyURLRegex: 'http(s?):\/\/(github.com)(\/JabRef)(\/jabref)(\/issues)\/(?<ticketNumber>\d+)'
           outputOnly: true
-      - run: echo "${{ steps.get_issue_number.outputs.issue_number }}"
+      - run: echo "${{ steps.get_issue_number.outputs.ticketNumber }}"
   unassign_issue:
     name: Mark issue as available
     runs-on: ubuntu-latest

.github/workflows/on-pr-opened-updated.yml

@@ -46,9 +46,9 @@ jobs:
           bodyRegexFlags: 'i'
           bodyURLRegex: 'http(s?):\/\/(github.com)(\/JabRef)(\/jabref)(\/issues)\/(?<ticketNumber>\d+)'
           outputOnly: true
-      - run: echo "${{ steps.get_issue_number.outputs.issue_number }}"
+      - run: echo "${{ steps.get_issue_number.outputs.ticketNumber }}"
       - name: Fail on no ticket number found
-        if: steps.get_issue_number.outputs.issue_number == '-1'
+        if: steps.get_issue_number.outputs.ticketNumber == '-1'
         run: |
           echo "No valid ticket number found!"
           exit 1