Add `suppress-summary` flag to model test command #1399

Job	Run time
Lints	21s
Shellcheck	4s
Security Audits	20s
Tests	1m 26s
Test Release Process	1m 10s
goreleaser	0s
binary-provenance	0s
image-provenance	0s
verification-with-cosign	0s
verification-with-slsa-verifier	0s
	3m 21s

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