chore(deps): update pre-commit hook executablebooks/mdformat to v0.7.19 #1825

Job	Run time
386:tcp image	6m 8s
386:ssh image	5m 59s
386:tcp-ccache image	9m 10s
386:ssh-ccache image	9m 21s
amd64:tcp image	2m 38s
amd64:ssh image	2m 49s
amd64:tcp-ccache image	3m 0s
amd64:ssh-ccache image	3m 1s
arm/v6:tcp image	6m 48s
arm/v6:ssh image	6m 51s
arm/v6:tcp-ccache image	10m 49s
arm/v6:ssh-ccache image	10m 19s
arm/v7:tcp image	5m 35s
arm/v7:ssh image	5m 33s
arm/v7:tcp-ccache image	8m 29s
arm/v7:ssh-ccache image	8m 14s
arm64:tcp image	5m 48s
arm64:ssh image	5m 35s
arm64:tcp-ccache image	8m 17s
arm64:ssh-ccache image	8m 37s
ppc64le:tcp image	5m 51s
ppc64le:ssh image	5m 44s
ppc64le:tcp-ccache image	8m 53s
ppc64le:ssh-ccache image	8m 29s
docker.io:tcp-pr-73-aa51238 manifest	5s
docker.io:ssh-pr-73-aa51238 manifest	15s
docker.io:tcp-ccache-pr-73-aa51238 manifest	7s
docker.io:ssh-ccache-pr-73-aa51238 manifest	8s
docker.io:tcp-pr-73 manifest	5s
docker.io:ssh-pr-73 manifest	8s
docker.io:tcp-ccache-pr-73 manifest	12s
docker.io:ssh-ccache-pr-73 manifest	8s
ghcr.io:tcp-pr-73-aa51238 manifest	11s
ghcr.io:ssh-pr-73-aa51238 manifest	13s
ghcr.io:tcp-ccache-pr-73-aa51238 manifest	5s
ghcr.io:ssh-ccache-pr-73-aa51238 manifest	7s
ghcr.io:tcp-pr-73 manifest	13s
ghcr.io:ssh-pr-73 manifest	6s
ghcr.io:tcp-ccache-pr-73 manifest	10s
ghcr.io:ssh-ccache-pr-73 manifest	15s
	2h 44m 26s

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