chore: bump go to 1.25.8 (#7876)

Author: pmalek

Dockerfile

@@ -1,6 +1,6 @@
 ### Standard binary
 # Build the manager binary
-FROM --platform=$BUILDPLATFORM golang:1.25.7@sha256:85c0ab0b73087fda36bf8692efe2cf67c54a06d7ca3b49c489bbff98c9954d64 AS builder
+FROM --platform=$BUILDPLATFORM golang:1.25.8@sha256:dfae680962532eeea67ab297f1166c2c4e686edb9a8f05f9d02d96fc9191833e AS builder
 
 ARG GOPATH
 ARG GOCACHE

Dockerfile.debug

@@ -1,5 +1,5 @@
 # Build a manager binary with debug symbols and download Delve
-FROM --platform=$BUILDPLATFORM golang:1.25.4@sha256:5d73b7b83dd6e0258ff62832c93b6ea208fbb7727985d265fb49f75f81fc3d1f AS builder
+FROM --platform=$BUILDPLATFORM golang:1.25.8@sha256:dfae680962532eeea67ab297f1166c2c4e686edb9a8f05f9d02d96fc9191833e AS builder
 
 ARG GOPATH
 ARG GOCACHE
@@ -46,7 +46,7 @@ RUN --mount=type=cache,target=$GOPATH/pkg/mod \
 
 ### Debug
 # Create an image that runs a debug build with Delve installed
-FROM --platform=$BUILDPLATFORM golang:1.25.4@sha256:5d73b7b83dd6e0258ff62832c93b6ea208fbb7727985d265fb49f75f81fc3d1f AS builder
+FROM --platform=$BUILDPLATFORM golang:1.25.8@sha256:dfae680962532eeea67ab297f1166c2c4e686edb9a8f05f9d02d96fc9191833e AS builder
 # renovate: datasource=github-releases depName=go-delve/delve
 RUN go install github.com/go-delve/delve/cmd/dlv@v1.25.0
 # We want all source so Delve file location operations work

go.mod

@@ -1,6 +1,6 @@
 module github.com/kong/kubernetes-ingress-controller/v3
 
-go 1.25.7
+go 1.25.8
 
 //
 //  Error parsing file: /home/runner/work/kubernetes-ingress-controller/kubernetes-ingress-controller/go.mod.