docker(deps): bump golang in the docker group across 1 directory

Bumps the docker group with 1 update in the / directory: golang.


Updates `golang` from 1.25-alpine to 1.26-alpine

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

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

Dockerfile

@@ -1,5 +1,5 @@
 # Build stage
-FROM golang:1.25-alpine AS builder
+FROM golang:1.26-alpine AS builder
 
 # Install git and ca-certificates (needed for fetching dependencies and HTTPS)
 RUN apk add --no-cache git ca-certificates tzdata file

Dockerfile.dev

@@ -2,7 +2,7 @@
 # Uses Alpine instead of scratch for debugging
 
 # Build stage - same as production
-FROM golang:1.25-alpine AS builder
+FROM golang:1.26-alpine AS builder
 
 # Install git and ca-certificates (needed for fetching dependencies and HTTPS)
 RUN apk add --no-cache git ca-certificates tzdata file