Log Message:
syncthing: update to 0.14.38.

This is a regularly scheduled stable release.

Resolved issues (cmd/syncthing):

    #4063, #4343: KCP connections are now more stable.
    #4348: Hashing benchmarks are skipped if a manual selection has been forced.

Resolved issues (cmd/strelaysrv):

    #4245: Relay server RAM usage has been reduced.