Bump aiopg from 0.16.0 to 1.0.0

Bumps [aiopg](https://github.com/aio-libs/aiopg) from 0.16.0 to 1.0.0.
- [Release notes](https://github.com/aio-libs/aiopg/releases)
- [Changelog](https://github.com/aio-libs/aiopg/blob/master/CHANGES.txt)
- [Commits](https://github.com/aio-libs/aiopg/compare/v0.16.0...v1.0.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

requirements-dev.txt

@@ -8,7 +8,7 @@ coverage==4.5.4
 sphinx==2.2.0
 pep257==0.7.0
 aiohttp-session==2.8.0
-aiopg[sa]==0.16.0
+aiopg[sa]==1.0.0
 aioredis==1.2.0
 hiredis==1.0.0
 passlib==1.7.1