TUN-10557: Bump quic-go v0.59.1

Bumps quic-go to v0.59.1 (chungthuang fork rebased from upstream v0.45 onto
v0.59.1). Upstream removed the `logging` package and replaced its
callback-based ConnectionTracer with the structured `qlog`/`qlogwriter` event
API, which required migrating cloudflared's QUIC metrics collection.

Migrations:

- quic/tracing.go: connTracer no longer fills a logging.ConnectionTracer
  callback struct. It implements qlogwriter.Trace + qlogwriter.Recorder and
  dispatches qlog events (PacketSent, PacketReceived, MetricsUpdated, ...) to
  the collector through RecordEvent. NewClientTracer now returns a function
  compatible with quic.Config.Tracer.

- quic/metrics.go: collector methods take qlog types (qlog.Frame,
  qlog.PacketType, qlog.MetricsUpdated, ...) and plain int64 in place of the
  removed logging.ByteCount/Frame/RTTStats/TransportParameters.

- quic/conversion.go: PacketType, PacketDropReason and PacketLossReason are
  strings upstream rather than numeric iotas, so the converters become
  pass-through allowlists. CongestionState is also a string;
  congestionStateToFloat maps it back to the numeric gauge values cloudflared
  exports.

- quic.Connection/quic.Stream became *quic.Conn/*quic.Stream; updated
  ConnWithCloser, SafeStreamCloser and the connection package accordingly.
  Tests and generated mocks (mocks/mock_quic_connection.go) were adapted to
  the new pointer-based API.

Closes TUN-10557

vendor/github.com/go-task/slim-sprig/v3/date.go

@@ -1,152 +0,0 @@
-package sprig
-
-import (
-	"strconv"
-	"time"
-)
-
-// Given a format and a date, format the date string.
-//
-// Date can be a `time.Time` or an `int, int32, int64`.
-// In the later case, it is treated as seconds since UNIX
-// epoch.
-func date(fmt string, date interface{}) string {
-	return dateInZone(fmt, date, "Local")
-}
-
-func htmlDate(date interface{}) string {
-	return dateInZone("2006-01-02", date, "Local")
-}
-
-func htmlDateInZone(date interface{}, zone string) string {
-	return dateInZone("2006-01-02", date, zone)
-}
-
-func dateInZone(fmt string, date interface{}, zone string) string {
-	var t time.Time
-	switch date := date.(type) {
-	default:
-		t = time.Now()
-	case time.Time:
-		t = date
-	case *time.Time:
-		t = *date
-	case int64:
-		t = time.Unix(date, 0)
-	case int:
-		t = time.Unix(int64(date), 0)
-	case int32:
-		t = time.Unix(int64(date), 0)
-	}
-
-	loc, err := time.LoadLocation(zone)
-	if err != nil {
-		loc, _ = time.LoadLocation("UTC")
-	}
-
-	return t.In(loc).Format(fmt)
-}
-
-func dateModify(fmt string, date time.Time) time.Time {
-	d, err := time.ParseDuration(fmt)
-	if err != nil {
-		return date
-	}
-	return date.Add(d)
-}
-
-func mustDateModify(fmt string, date time.Time) (time.Time, error) {
-	d, err := time.ParseDuration(fmt)
-	if err != nil {
-		return time.Time{}, err
-	}
-	return date.Add(d), nil
-}
-
-func dateAgo(date interface{}) string {
-	var t time.Time
-
-	switch date := date.(type) {
-	default:
-		t = time.Now()
-	case time.Time:
-		t = date
-	case int64:
-		t = time.Unix(date, 0)
-	case int:
-		t = time.Unix(int64(date), 0)
-	}
-	// Drop resolution to seconds
-	duration := time.Since(t).Round(time.Second)
-	return duration.String()
-}
-
-func duration(sec interface{}) string {
-	var n int64
-	switch value := sec.(type) {
-	default:
-		n = 0
-	case string:
-		n, _ = strconv.ParseInt(value, 10, 64)
-	case int64:
-		n = value
-	}
-	return (time.Duration(n) * time.Second).String()
-}
-
-func durationRound(duration interface{}) string {
-	var d time.Duration
-	switch duration := duration.(type) {
-	default:
-		d = 0
-	case string:
-		d, _ = time.ParseDuration(duration)
-	case int64:
-		d = time.Duration(duration)
-	case time.Time:
-		d = time.Since(duration)
-	}
-
-	u := uint64(d)
-	neg := d < 0
-	if neg {
-		u = -u
-	}
-
-	var (
-		year   = uint64(time.Hour) * 24 * 365
-		month  = uint64(time.Hour) * 24 * 30
-		day    = uint64(time.Hour) * 24
-		hour   = uint64(time.Hour)
-		minute = uint64(time.Minute)
-		second = uint64(time.Second)
-	)
-	switch {
-	case u > year:
-		return strconv.FormatUint(u/year, 10) + "y"
-	case u > month:
-		return strconv.FormatUint(u/month, 10) + "mo"
-	case u > day:
-		return strconv.FormatUint(u/day, 10) + "d"
-	case u > hour:
-		return strconv.FormatUint(u/hour, 10) + "h"
-	case u > minute:
-		return strconv.FormatUint(u/minute, 10) + "m"
-	case u > second:
-		return strconv.FormatUint(u/second, 10) + "s"
-	}
-	return "0s"
-}
-
-func toDate(fmt, str string) time.Time {
-	t, _ := time.ParseInLocation(fmt, str, time.Local)
-	return t
-}
-
-func mustToDate(fmt, str string) (time.Time, error) {
-	return time.ParseInLocation(fmt, str, time.Local)
-}
-
-func unixEpoch(date time.Time) string {
-	return strconv.FormatInt(date.Unix(), 10)
-}