main/mkinitfs: update url for mkinitfs

* Update URL from old git to gitlab
* Bump pkgrel
* Ignore shellcheck warning about unused var that is used sometimes
7 jobs for !16083 with patch-1 in 1 minute and 12 seconds (queued for 1 second)
detached
Status Job ID Name Coverage
  Lint
passed #278428
docker-alpine x86_64
lint

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  Build
passed #278433
docker-alpine ci-build aarch64
build-aarch64

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passed #278434
docker-alpine ci-build armv7
build-armv7

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passed #278432
docker-alpine ci-build ppc64le
build-ppc64le

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passed #278431
docker-alpine ci-build s390x
build-s390x

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passed #278430
docker-alpine ci-build x86
build-x86

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passed #278429
docker-alpine ci-build x86_64
build-x86_64

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