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

@@ -31,7 +31,7 @@
 # --- Go: build base with deps and shared source ---
 # Use $BUILDPLATFORM so the Go compiler runs natively (no QEMU emulation).
 # Cross-compilation is handled via GOOS/GOARCH env vars.
-FROM --platform=$BUILDPLATFORM golang:1.25 AS go-base
+FROM --platform=$BUILDPLATFORM golang:1.27 AS go-base
 ARG TARGETOS TARGETARCH
 ENV GOOS=${TARGETOS} GOARCH=${TARGETARCH}
 WORKDIR /app