wcfs: v↑ go123

This updates the version of go123. The new version supports Go 1.25, which is required because we want to compile wendelin.core with Go ≥ 1.24 to fix a memory leak in NEO/go [1].

[1] See https://lab.nexedi.com/kirr/neo/-/merge_requests/11 for more context.

/cc @kirr