Update module github.com/enterprise-contract/enterprise-contract-controller/api to v0.1.291 (#765)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

schema/go.mod

@@ -3,7 +3,7 @@ module github.com/enterprise-contract/enterprise-contract-controller/schema
 go 1.23.6
 
 require (
-	github.com/enterprise-contract/enterprise-contract-controller/api v0.1.290
+	github.com/enterprise-contract/enterprise-contract-controller/api v0.1.291
 	github.com/invopop/jsonschema v0.12.0
 )