deps: update module github.com/cloudevents/sdk-go/v2 to v2.15.1 (#3118)

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

lifecycle-operator/go.mod

@@ -6,7 +6,7 @@ require (
 	dario.cat/mergo v1.0.0
 	github.com/argoproj/argo-rollouts v1.6.6
 	github.com/benbjohnson/clock v1.3.5
-	github.com/cloudevents/sdk-go/v2 v2.15.0
+	github.com/cloudevents/sdk-go/v2 v2.15.1
 	github.com/go-logr/logr v1.4.1
 	github.com/kelseyhightower/envconfig v1.4.0
 	github.com/keptn/lifecycle-toolkit/keptn-cert-manager v0.0.0-20240214135802-4eeac278ce20

lifecycle-operator/go.sum

@@ -14,8 +14,8 @@ github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XL
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
-github.com/cloudevents/sdk-go/v2 v2.15.0 h1:aKnhLQhyoJXqEECQdOIZnbZ9VupqlidE6hedugDGr+I=
-github.com/cloudevents/sdk-go/v2 v2.15.0/go.mod h1:lL7kSWAE/V8VI4Wh0jbL2v/jvqsm6tjmaQBSvxcv4uE=
+github.com/cloudevents/sdk-go/v2 v2.15.1 h1:EZxXQFkzk8TSsxDBx8v18+KGwTYsGRyHNwtzZiHUk4E=
+github.com/cloudevents/sdk-go/v2 v2.15.1/go.mod h1:lL7kSWAE/V8VI4Wh0jbL2v/jvqsm6tjmaQBSvxcv4uE=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=