Update golang Docker tag ( 1.23.4 → 1.25.3 )

| datasource | package | from   | to     |
| ---------- | ------- | ------ | ------ |
| docker     | golang  | 1.23.4 | 1.25.3 |


Signed-off-by: Davide Rutigliano <[email protected]>

Author: renovate[bot]

src/backend/Dockerfile

@@ -1,5 +1,5 @@
 # Use the official Golang image as the base image
-FROM --platform=linux/$TARGETARCH golang:1.23.4-alpine AS builder
+FROM --platform=linux/$TARGETARCH golang:1.25.3-alpine AS builder
 
 # Set ARG for platform targeting
 ARG TARGETARCH