* fix(TestProfilingCPU)_: enable run with -count=2
* fix(TestProfilingMem)_: enable run with -count=2
* fix(zaputil)_: register encoder only once
* fix(timesource)_: global variables override in tests
* fix(TestClosingsqlDB)_: delete database from cache
* fix(postgres/helpers)_: drop connections before dropping database
* fix_: linter
* chore_: remove redundant condition