fix: include workflow file in trigger paths

Author: devendra1176

.github/workflows/deploy-backend.yml

@@ -5,10 +5,14 @@ on:
     branches: [ main ]
     paths:
       - 'task-tracker-api/**'
+      - '.github/workflows/deploy-backend.yml'
+
   pull_request:
     branches: [ main ]
     paths:
       - 'task-tracker-api/**'
+      - '.github/workflows/deploy-backend.yml'
+
   workflow_dispatch:
 
 jobs: