Add `suppress-summary` flag to model test command #1385

Job	Run time
Lints	54s
Tests	1m 39s
Shellcheck	4s
Security Audits	28s
Test Release Process	4m 16s
goreleaser	0s
image-provenance	0s
binary-provenance	0s
verification-with-slsa-verifier	0s
verification-with-cosign	0s
	7m 21s

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