build(deps): bump golang from 1.25 to 1.27

Bumps golang from 1.25 to 1.27.

---
updated-dependencies:
- dependency-name: golang
  dependency-version: '1.27'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Dockerfile

@@ -2,7 +2,7 @@
 # Copyright 2026 StepSecurity
 # SPDX-License-Identifier: MPL-2.0
 
-FROM golang:1.25@sha256:699337d620559a59b4a2bb298ad59611e535d2ee755a34cf2d2a98f37578dc80 AS build
+FROM golang:1.27@sha256:7543a96ce82c8e9003cae079ee3e0bc5b7799df8eed2a041e403af0d31fa4e67 AS build
 LABEL maintainer="step-security security@stepsecurity.io"
 
 # Copy all the action files into the container