Update docker-master

Author: tianon

docker-master/Dockerfile

@@ -98,7 +98,7 @@ RUN set -eux; \
 
 FROM golang:1.25-trixie AS buildx
 
-ARG BUILDX_GITCOMMIT=c7dfed7dcc344b92448e2335a900b63d847675fc
+ARG BUILDX_GITCOMMIT=eff492f5d7d043fdad8481c014ce1289972a4524
 ENV BUILDX_GITCOMMIT $BUILDX_GITCOMMIT
 
 RUN set -eux; \

docker-master/versions.json

@@ -10,7 +10,7 @@
     }
   },
   "buildx": {
-    "version": "c7dfed7dcc344b92448e2335a900b63d847675fc",
+    "version": "eff492f5d7d043fdad8481c014ce1289972a4524",
     "go": {
       "version": "1.25.5"
     }