Update module github.com/stackitcloud/stackit-sdk-go/core to v0.26.0 (#925)

Co-authored-by: ske-renovate-ce[bot] <163154779+ske-renovate-ce[bot]@users.noreply.github.com>

Author: ske-renovate-ce[bot]

go.mod

@@ -13,7 +13,7 @@ require (
 	github.com/prometheus/client_golang v1.23.2
 	github.com/spf13/cobra v1.10.2
 	github.com/spf13/pflag v1.0.10
-	github.com/stackitcloud/stackit-sdk-go/core v0.25.0
+	github.com/stackitcloud/stackit-sdk-go/core v0.26.0
 	github.com/stackitcloud/stackit-sdk-go/services/iaas v1.10.1
 	github.com/stackitcloud/stackit-sdk-go/services/loadbalancer v1.12.0
 	go.uber.org/mock v0.6.0

go.sum

@@ -186,8 +186,8 @@ github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
 github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/stackitcloud/cloud-provider v0.35.1-ske-1 h1:Oo71mALP7hh50wAeGOogng2sAsi7AUre4177WS2n9NE=
 github.com/stackitcloud/cloud-provider v0.35.1-ske-1/go.mod h1:zGF/i9YuBODKxj7szGMMIz4DRnjsDy5mg2JU+XbbULA=
-github.com/stackitcloud/stackit-sdk-go/core v0.25.0 h1:ra3VEk684MNoq741g+xbZrKjZzhyztq5liUAwwew4DY=
-github.com/stackitcloud/stackit-sdk-go/core v0.25.0/go.mod h1:WU1hhxnjXw2EV7CYa1nlEvNpMiRY6CvmIOaHuL3pOaA=
+github.com/stackitcloud/stackit-sdk-go/core v0.26.0 h1:jQEb9gkehfp6VCP6TcYk7BI10cz4l0KM2L6hqYBH2QA=
+github.com/stackitcloud/stackit-sdk-go/core v0.26.0/go.mod h1:WU1hhxnjXw2EV7CYa1nlEvNpMiRY6CvmIOaHuL3pOaA=
 github.com/stackitcloud/stackit-sdk-go/services/iaas v1.10.1 h1:cnuhSWcd2MxG/LWkJgxTZCbtLCBLNSB31/iGfCj7rUw=
 github.com/stackitcloud/stackit-sdk-go/services/iaas v1.10.1/go.mod h1:Qa7486Y17g07N/9HbAVEVPcPZ+e1l3y7F9I7j5nKewY=
 github.com/stackitcloud/stackit-sdk-go/services/loadbalancer v1.12.0 h1:NV8gJ75nPvnJvxXVAp3zSoer04jq1LLxEhGZdH68jQU=