community/py3-aiohttp: bump chardet dependency to 4.0.0

We already ship py3-chardet 4.0.0 and some functionalities of
py3-aiohttp will complain that we ship a newer version than what it
expects
7 jobs for !18923 with community_py3-aiohttp in 6 minutes and 42 seconds (queued for 1 second)
latest detached
Status Job ID Name Coverage
  Lint
passed #336451
docker-alpine x86_64
lint

00:00:18

 
  Build
passed #336456
docker-alpine ci-build aarch64
build-aarch64

00:01:07

passed #336457
docker-alpine ci-build armv7
build-armv7

00:01:10

passed #336455
docker-alpine ci-build ppc64le
build-ppc64le

00:01:20

passed #336454
docker-alpine ci-build s390x
build-s390x

00:04:24

passed #336453
docker-alpine ci-build x86
build-x86

00:00:39

passed #336452
docker-alpine ci-build x86_64
build-x86_64

00:01:16