Run go mod tidy

Signed-off-by: Andrew Gillis <[email protected]>

go.mod

@@ -10,7 +10,6 @@ require (
 	github.com/go-openapi/swag v0.23.0
 	github.com/google/certificate-transparency-go v1.2.1
 	github.com/in-toto/attestation v1.1.0
-	github.com/in-toto/in-toto-golang v0.9.0
 	github.com/secure-systems-lab/go-securesystemslib v0.8.0
 	github.com/sigstore/protobuf-specs v0.3.2
 	github.com/sigstore/rekor v1.3.6
@@ -51,6 +50,7 @@ require (
 	github.com/hashicorp/go-retryablehttp v0.7.7 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/in-toto/in-toto-golang v0.9.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/jedisct1/go-minisign v0.0.0-20211028175153-1c139d1cc84b // indirect
 	github.com/josharian/intern v1.0.0 // indirect