fix(deps): update module github.com/kedacore/keda/v2 to v2.19.0

| datasource | package                     | from    | to      |
| ---------- | --------------------------- | ------- | ------- |
| go         | github.com/kedacore/keda/v2 | v2.18.3 | v2.19.0 |


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

Author: renovate[bot]

go.mod

@@ -12,7 +12,7 @@ require (
 	github.com/go-logr/logr v1.4.3
 	github.com/google/go-cmp v0.7.0
 	github.com/hashicorp/go-immutable-radix/v2 v2.1.0
-	github.com/kedacore/keda/v2 v2.18.3
+	github.com/kedacore/keda/v2 v2.19.0
 	github.com/onsi/ginkgo/v2 v2.28.1
 	github.com/onsi/gomega v1.39.1
 	github.com/prometheus/client_golang v1.23.2