Update golang Docker tag to v1.25 (#63)

renovate[bot] · web-flow · commit cac3b7ba7bfb · 2025-08-26T22:36:24.000+09:00
Co-authored-by: renovate[bot] &lt;29139614+renovate[bot]@users.noreply.github.com&gt;
diff --git a/Dockerfile b/Dockerfile
@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1
-FROM golang:1.24 AS builder
+FROM golang:1.25 AS builder
 
 WORKDIR /src
 
diff --git a/Dockerfile-standalone b/Dockerfile-standalone
@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1
-FROM golang:1.24 AS builder
+FROM golang:1.25 AS builder
 
 WORKDIR /src
 
