Update ghcr.io/astral-sh/uv Docker tag to v0.7.19 (#287) #227

Job	Run time
test	2m 16s
build-arch (linux/amd64, ubuntu-latest, http)	2m 8s
build-arch (linux/amd64, ubuntu-latest, migrations)	1m 48s
build-arch (linux/amd64, ubuntu-latest, dramatiq)	2m 3s
build-arch (linux/amd64, ubuntu-latest, socketio)	1m 59s
build-arch (linux/arm64, ubuntu-24.04-arm, migrations)	2m 19s
build-arch (linux/arm64, ubuntu-24.04-arm, socketio)	2m 10s
build-arch (linux/arm64, ubuntu-24.04-arm, dramatiq)	2m 8s
build-arch (linux/arm64, ubuntu-24.04-arm, http)	2m 13s
aggregate-manifests (http)	36s
aggregate-manifests (socketio)	20s
aggregate-manifests (dramatiq)	35s
aggregate-manifests (migrations)	27s
	21m 2s

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