chore: bump golang from 1.25.6 to 1.26.0

Bumps golang from 1.25.6 to 1.26.0.

---
updated-dependencies:
- dependency-name: golang
  dependency-version: 1.26.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Dockerfile

@@ -17,7 +17,7 @@
 ARG BASE_IMAGE_GO_DISTROLESS
 
 # Build the manager binary
-FROM golang:1.25.6 AS builder
+FROM golang:1.26.0 AS builder
 ARG TARGETOS
 ARG TARGETARCH
 ARG GCFLAGS