main/tzdata: upgrade to 2021a

7 jobs for !18363 with 3.10-tzdata21 in 21 minutes and 17 seconds (queued for 1 second)
detached
Status Job ID Name Coverage
  Lint
passed #326412
docker-alpine x86_64
lint

00:02:15

 
  Build
passed #326417
docker-alpine ci-build aarch64
build-aarch64

00:04:05

passed #326418
docker-alpine ci-build armv7
build-armv7

00:05:34

passed #326416
docker-alpine ci-build ppc64le
build-ppc64le

00:04:59

passed #326415
docker-alpine ci-build s390x
build-s390x

00:01:27

passed #326414
docker-alpine ci-build x86
build-x86

00:01:25

passed #326413
docker-alpine ci-build x86_64
build-x86_64

00:18:25