[MISC] Update data-platform-libs: data_interfaces to 34 (#455)

* update libs

* fix unit tests

* update get/set secret methods and tests

* fix linting

* remove debug comment

* revert password key naming

* add peer check

* make test_set_secret use get_secret method

* revert db endpoint change + fix unit test

* refactor set secret test

* fix linting

* rollback upgrade lib bump

* review suggestions

* revert new test changes

* update docstrings