community/py3-praw: upgrade to 7.4.0

Necessary for Giara to be able to reauthenticate with the same
credentials after the initial login. Crashes without this.
8 jobs for !26358 with giara-1.0 in 13 minutes and 37 seconds (queued for 7 seconds)
detached
Status Job ID Name Coverage
  Lint
passed #511513
docker-alpine x86_64
lint

00:00:19

 
  Build
passed #511518
docker-alpine ci-build aarch64
build-aarch64

00:03:45

passed #511520
docker-alpine ci-build armhf
build-armhf

00:04:35

passed #511519
docker-alpine ci-build armv7
build-armv7

00:04:37

passed #511517
docker-alpine ci-build ppc64le
build-ppc64le

00:04:54

passed #511516
docker-alpine ci-build s390x
build-s390x

00:00:46

passed #511515
docker-alpine ci-build x86
build-x86

00:01:47

passed #511514
docker-alpine ci-build x86_64
build-x86_64

00:01:05