fix: remove redundant if: success() condition from deploy job

The if: success() might be causing issues with Forgejo's secret handling.
Jobs with 'needs' automatically wait for dependencies to succeed, making
the condition redundant.

.forgejo/workflows/production.yaml

@@ -215,7 +215,6 @@ jobs:
     runs-on: ubuntu-22.04
     # Only require ExUnit tests to pass, e2e is optional
     needs: [test-exunit]
-    if: success()
 
     steps:
       - name: Checkout code