[COST-4930] Increase max_length for instance_name field

[djnakabaale]

Jira Ticket

COST-4930

Description

This change will increase the max_length for the instance_name field in the AWSCostEntryLineItemSummaryByEC2Compute table

Testing

1. Checkout Branch

2. Run migrations

3. Launch postgres shell and check to see that the character_maximum_length for instance_name is 256

   postgres=# select column_name, character_maximum_length from information_schema.columns where table_name = 'reporting_awscostentrylineitem_summary_by_ec2_compute' and column_name = 'instance_name';
   column_name  | character_maximum_length 
   ---------------+--------------------------
   instance_name |                      256
   
   

Depends on:

• [COST-4930] Migration to alter max_length for instance_name field #5122

Release Notes

• proposed release note

* [COST-4930](https://issues.redhat.com/browse/COST-4930) Increase max_length for instance_name field

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.2%. Comparing base (ea53681) to head (1073b31).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #5123     +/-   ##
=======================================
- Coverage   94.2%   94.2%   -0.0%     
=======================================
  Files        378     378             
  Lines      31624   31624             
  Branches    3756    3756             
=======================================
- Hits       29780   29778      -2     
  Misses      1177    1177             
- Partials     667     669      +2