Chore(deps): Bump golang from 1.25-alpine to 1.26-alpine

Bumps golang from 1.25-alpine to 1.26-alpine.

---
updated-dependencies:
- dependency-name: golang
  dependency-version: 1.26-alpine
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Dockerfile

@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM --platform=$BUILDPLATFORM golang:1.25-alpine AS builder
+FROM --platform=$BUILDPLATFORM golang:1.26-alpine AS builder
 
 WORKDIR /workspace
 # Copy the Go Modules manifests