vendor: Mega update all dependencies

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4080

vendor/github.com/rcrowley/go-metrics/validate.sh

@@ -1,10 +0,0 @@
-#!/bin/bash
-
-set -e
-
-# check there are no formatting issues
-GOFMT_LINES=`gofmt -l . | wc -l | xargs`
-test $GOFMT_LINES -eq 0 || echo "gofmt needs to be run, ${GOFMT_LINES} files have issues"
-
-# run the tests for the root package
-go test .