fix postgres integration tests

[subodh1810]

Issue : #5371
There are multiple issues with the postgres connector

1. After we introduced validation for config objects in the PR 🎉 All java connectors: Added configValidator to check, discover, read and write calls #4699 , the postgres source publish and integration tests have been broken. Which also means the validation changes have not been published for postgres source yet
2. The CdcPostgresSourceAcceptanceTest was never running in CDC mode, it was running in Standard mode which means it was not really testing what it was supposed to test
3. The CdcPostgresSourceComprehensiveTest was never running in CDC mode, it was running in Standard mode which means it was not really testing what it was supposed to test. Once I enabled the CDC I realised that there were data types that started breaking, for now I have just ignored the data types, follow up issue to fix it Fix data type tests in CdcPostgresSourceDatatypeTest #5382

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[subodh1810]

/test connector=source-postgres

🕑 source-postgres https://github.com/airbytehq/airbyte/actions/runs/1124281184
✅ source-postgres https://github.com/airbytehq/airbyte/actions/runs/1124281184

[sherifnada]

Once we have the issue can you send me the link to prioritize?

[subodh1810]

/test connector=source-postgres

🕑 source-postgres https://github.com/airbytehq/airbyte/actions/runs/1125300175
✅ source-postgres https://github.com/airbytehq/airbyte/actions/runs/1125300175

[subodh1810]

@sherifnada follow up issue : #5382