Regenerated dockerfiles.

Author: thresheek

pkg/docker/Dockerfile.go1.23 renamed to pkg/docker/Dockerfile.go1.25

@@ -1,6 +1,6 @@
-FROM golang:1.23-bookworm
+FROM golang:1.25-bookworm
 
-LABEL org.opencontainers.image.title="Unit (go1.23)"
+LABEL org.opencontainers.image.title="Unit (go1.25)"
 LABEL org.opencontainers.image.description="Official build of Unit for Docker."
 LABEL org.opencontainers.image.url="https://unit.nginx.org"
 LABEL org.opencontainers.image.source="https://github.com/nginx/unit"