Update versions and prune test fixtures

Author: andrewstucki

.changes/operator/v25.3.1.md

@@ -1,3 +1,5 @@
 ## [v25.3.1](https://github.com/redpanda-data/redpanda-operator/releases/tag/operator%2Fv25.3.1) - 2025-12-10
 ### Added
 * ShadowLink CRD for controlling 25.3 shadow link settings. See documentation for details.
+### Changed
+* Use the kube-system namespace by default for leader election when the operator is running in cluster-scoped mode.

.changes/unreleased/operator-Changed-20251210-125034.yaml

@@ -206,7 +206,7 @@ require (
 	github.com/redpanda-data/common-go/secrets v0.1.4 // indirect
 	github.com/redpanda-data/console/backend v0.0.0-20251127091030-9718993ad186 // indirect
 	github.com/redpanda-data/redpanda-operator/charts/console/v3 v3.3.0 // indirect
-	github.com/redpanda-data/redpanda-operator/charts/redpanda/v25 v25.2.1 // indirect
+	github.com/redpanda-data/redpanda-operator/charts/redpanda/v25 v25.3.1 // indirect
 	github.com/redpanda-data/redpanda-operator/gotohelm v1.2.1-0.20250909192010-c59ff494d04a // indirect
 	github.com/redpanda-data/redpanda/src/go/rpk v0.0.0-20250716004441-6e1647296ad6 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect

acceptance/go.mod

@@ -52,6 +52,6 @@ annotations:
       url: https://helm.sh/docs/intro/install/
   artifacthub.io/images: |
     - name: redpanda
-      image: docker.redpanda.com/redpandadata/redpanda:v25.2.1
+      image: docker.redpanda.com/redpandadata/redpanda:v25.3.1
     - name: busybox
       image: busybox:latest

charts/redpanda/chart/Chart.yaml

@@ -17,7 +17,7 @@ require (
 	github.com/invopop/jsonschema v0.12.0
 	github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring v0.76.2
 	github.com/redpanda-data/redpanda-operator/charts/console/v3 v3.3.0
-	github.com/redpanda-data/redpanda-operator/charts/redpanda/v25 v25.2.1
+	github.com/redpanda-data/redpanda-operator/charts/redpanda/v25 v25.3.1
 	github.com/redpanda-data/redpanda-operator/operator v0.0.0-20250528175436-e8cca0053dc6
 	github.com/redpanda-data/redpanda-operator/pkg v0.0.0-20250528175436-e8cca0053dc6
 	github.com/spf13/cobra v1.9.1

gen/go.mod

@@ -8,7 +8,8 @@ and is generated by [Changie](https://github.com/miniscruff/changie).
 ## [v25.3.1](https://github.com/redpanda-data/redpanda-operator/releases/tag/operator%2Fv25.3.1) - 2025-12-10
 ### Added
 * ShadowLink CRD for controlling 25.3 shadow link settings. See documentation for details.
-
+### Changed
+* Use the kube-system namespace by default for leader election when the operator is running in cluster-scoped mode.
 ## [v25.2.1](https://github.com/redpanda-data/redpanda-operator/releases/tag/operator%2Fv25.2.1) - 2025-12-02
 ### Added
 * Roles can be declaratively managed using RedpandaRole CRD