build: capturing new migrations.

.github/workflows/capture_new_migrations.yml

@@ -18,7 +18,7 @@ jobs:
         # 'pinned' is used to install the latest patch version of Django
         # within the global constraint i.e. Django==3.2.21 in current case
         # because we have global constraint of Django<4.2
-        django-version: ["pinned", "4.2"]
+        django-version: ["4.2"]
         mongo-version: ["4"]
         mysql-version: ["8"]
         # excluding mysql5.7 with Django 4.2 since Django 4.2 has
@@ -160,7 +160,10 @@ jobs:
 
     - name: Verify difference
       run: |
-        diff = $query_result1 - $query_result
+        number1=$query_result1
+        number2=$query_result
+        # Perform subtraction
+        diff=$((number1 - number2))
         result=$(mysql -h 127.0.0.1 -uedxapp001 -ppassword -e "select  * from django_migrations ORDER by -id limit $diff ;" edxapp;)
         echo "Query Result: $result"
         echo "$result"