Bump faker from 4.0.1 to 4.0.2 in /packages/postgres-database

Bumps [faker](https://github.com/joke2k/faker) from 4.0.1 to 4.0.2.
- [Release notes](https://github.com/joke2k/faker/releases)
- [Changelog](https://github.com/joke2k/faker/blob/master/CHANGELOG.rst)
- [Commits](joke2k/faker@v4.0.1...v4.0.2)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

packages/postgres-database/requirements/_test.txt

@@ -20,7 +20,7 @@ coverage==5.0.3           # via -r requirements/_test.in, coveralls, pytest-cov
 coveralls==1.11.1         # via -r requirements/_test.in
 docker==4.0.2             # via -r requirements/_migration.txt
 docopt==0.6.2             # via coveralls
-faker==4.0.1              # via -r requirements/_test.in
+faker==4.0.2              # via -r requirements/_test.in
 idna==2.8                 # via -r requirements/_migration.txt, requests, yarl
 isort==4.3.21             # via pylint
 lazy-object-proxy==1.4.3  # via astroid