feat: utilize uv CI cache #445

Job	Run time
Build, stable, linux/amd64	5m 20s
Build, stable, linux/arm64	19m 31s
Trivy Container Scan	2m 16s
Anchore Container Scan	1m 31s
Test basic, stable	3m 5s
Test split, stable	2m 17s
Test novolume, stable	3m 6s
Test single celery process, stable	2m 33s
Test SAML, stable	2m 7s
Test SSL, stable	2m 28s
Merge images	12s
Publish to Docker Hub, stable	0s
Publish to GitHub, stable	0s
Create release on GitHub	0s
	44m 26s

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