Update caddyserver/certmagic (#16789)

Fixes issue with windows users & letsencrypt

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

vendor/go.uber.org/atomic/int64.go

@@ -36,8 +36,8 @@ type Int64 struct {
 }
 
 // NewInt64 creates a new Int64.
-func NewInt64(i int64) *Int64 {
-	return &Int64{v: i}
+func NewInt64(val int64) *Int64 {
+	return &Int64{v: val}
 }
 
 // Load atomically loads the wrapped value.
@@ -46,13 +46,13 @@ func (i *Int64) Load() int64 {
 }
 
 // Add atomically adds to the wrapped int64 and returns the new value.
-func (i *Int64) Add(n int64) int64 {
-	return atomic.AddInt64(&i.v, n)
+func (i *Int64) Add(delta int64) int64 {
+	return atomic.AddInt64(&i.v, delta)
 }
 
 // Sub atomically subtracts from the wrapped int64 and returns the new value.
-func (i *Int64) Sub(n int64) int64 {
-	return atomic.AddInt64(&i.v, -n)
+func (i *Int64) Sub(delta int64) int64 {
+	return atomic.AddInt64(&i.v, -delta)
 }
 
 // Inc atomically increments the wrapped int64 and returns the new value.
@@ -66,18 +66,18 @@ func (i *Int64) Dec() int64 {
 }
 
 // CAS is an atomic compare-and-swap.
-func (i *Int64) CAS(old, new int64) bool {
+func (i *Int64) CAS(old, new int64) (swapped bool) {
 	return atomic.CompareAndSwapInt64(&i.v, old, new)
 }
 
 // Store atomically stores the passed value.
-func (i *Int64) Store(n int64) {
-	atomic.StoreInt64(&i.v, n)
+func (i *Int64) Store(val int64) {
+	atomic.StoreInt64(&i.v, val)
 }
 
 // Swap atomically swaps the wrapped int64 and returns the old value.
-func (i *Int64) Swap(n int64) int64 {
-	return atomic.SwapInt64(&i.v, n)
+func (i *Int64) Swap(val int64) (old int64) {
+	return atomic.SwapInt64(&i.v, val)
 }
 
 // MarshalJSON encodes the wrapped int64 into JSON.