ci: Added cron at 6 am ist on tbp ce workflow (#29643)

## Description
> Added a cron job for the TBP workflow to run at 6 am on weekdays-
Daily Promotion analysis purpose

#### Type of change
- Chore (housekeeping or task changes that don't impact user perception)

## Testing
- To check if the workflow is triggered as expected 

#### How Has This Been Tested?
- [x] Manual


## Checklist:
#### Dev activity
- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] PR is being merged under a feature flag


#### QA activity:
- [ ] [Speedbreak
features](https://github.com/appsmithorg/TestSmith/wiki/Guidelines-for-test-plans#speedbreakers-)
have been covered
- [ ] Test plan covers all impacted features and [areas of
interest](https://github.com/appsmithorg/TestSmith/wiki/Guidelines-for-test-plans#areas-of-interest-)
- [ ] Test plan has been peer reviewed by project stakeholders and other
QA members
- [ ] Manually tested functionality on DP
- [ ] We had an implementation alignment call with stakeholders post QA
Round 2
- [ ] Cypress test cases have been added and approved by SDET/manual QA
- [ ] Added `Test Plan Approved` label after Cypress tests were reviewed
- [ ] Added `Test Plan Approved` label after JUnit tests were reviewed

.github/workflows/test-build-docker-image.yml

@@ -1,6 +1,9 @@
 name: Test, build and push Docker Image
 
 on:
+  # This workflow will run everyday at 06:00 AM IST (12:30 AM UTC) on weekdays
+  schedule:
+    - cron: "30 00 * * 1-5"
   # This line enables manual triggering of this workflow.
   workflow_dispatch: