fix(deps): update module github.com/cert-manager/cert-manager to v1.15.4 [security]

Author: renovate[bot]

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/VictoriaMetrics/operator/api v0.66.1
 	github.com/backube/snapscheduler v1.2.0
 	github.com/backube/volsync v0.8.0
-	github.com/cert-manager/cert-manager v1.15.3
+	github.com/cert-manager/cert-manager v1.15.4
 	github.com/cilium/cilium v1.18.1
 	github.com/cloudnative-pg/cloudnative-pg v1.25.1
 	github.com/crunchydata/postgres-operator v0.0.0-00010101000000-000000000000

go.sum

@@ -1506,6 +1506,8 @@ github.com/census-instrumentation/opencensus-proto v0.3.0/go.mod h1:f6KPmirojxKA
 github.com/census-instrumentation/opencensus-proto v0.4.1/go.mod h1:4T9NM4+4Vw91VeyqjLS6ao50K5bOcLKN6Q42XnYaRYw=
 github.com/cert-manager/cert-manager v1.15.3 h1:/u9T0griwd5MegPfWbB7v0KcVcT9OJrEvPNhc9tl7xQ=
 github.com/cert-manager/cert-manager v1.15.3/go.mod h1:stBge/DTvrhfQMB/93+Y62s+gQgZBsfL1o0C/4AL/mI=
+github.com/cert-manager/cert-manager v1.15.4 h1:FtH6BOTmkNBNRjoYSW2b80MYpUq4Zw1zbEB6flYzkiM=
+github.com/cert-manager/cert-manager v1.15.4/go.mod h1:stBge/DTvrhfQMB/93+Y62s+gQgZBsfL1o0C/4AL/mI=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=