build(deps): bump postgrex from 0.15.10 to 0.15.11
build(deps): bump postgrex from 0.15.10 to 0.15.11

Bumps [postgrex](https://github.com/elixir-ecto/postgrex) from 0.15.10 to 0.15.11.
- [Release notes](https://github.com/elixir-ecto/postgrex/releases)
- [Changelog](https://github.com/elixir-ecto/postgrex/blob/master/CHANGELOG.md)
- [Commits](https://github.com/elixir-ecto/postgrex/compare/v0.15.10...v0.15.11)

---
updated-dependencies:
- dependency-name: postgrex
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
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