build(deps): update golang:1.25-alpine docker digest to 660f0b8 (#456)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Dockerfile

@@ -7,7 +7,7 @@ RUN pnpm install
 COPY web/ ./
 RUN pnpm run build
 
-FROM golang:1.25-alpine@sha256:d9b2e14101f27ec8d09674cd01186798d227bb0daec90e032aeb1cd22ac0f029 AS backend-build
+FROM golang:1.25-alpine@sha256:660f0b83cf50091e3777e4730ccc0e63e83fea2c420c872af5c60cb357dcafb2 AS backend-build
 RUN apk add --no-cache git
 WORKDIR /app