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/unsafe_pointer.go

@@ -33,8 +33,8 @@ type UnsafePointer struct {
 }
 
 // NewUnsafePointer creates a new UnsafePointer.
-func NewUnsafePointer(p unsafe.Pointer) *UnsafePointer {
-	return &UnsafePointer{v: p}
+func NewUnsafePointer(val unsafe.Pointer) *UnsafePointer {
+	return &UnsafePointer{v: val}
 }
 
 // Load atomically loads the wrapped value.
@@ -43,16 +43,16 @@ func (p *UnsafePointer) Load() unsafe.Pointer {
 }
 
 // Store atomically stores the passed value.
-func (p *UnsafePointer) Store(q unsafe.Pointer) {
-	atomic.StorePointer(&p.v, q)
+func (p *UnsafePointer) Store(val unsafe.Pointer) {
+	atomic.StorePointer(&p.v, val)
 }
 
 // Swap atomically swaps the wrapped unsafe.Pointer and returns the old value.
-func (p *UnsafePointer) Swap(q unsafe.Pointer) unsafe.Pointer {
-	return atomic.SwapPointer(&p.v, q)
+func (p *UnsafePointer) Swap(val unsafe.Pointer) (old unsafe.Pointer) {
+	return atomic.SwapPointer(&p.v, val)
 }
 
 // CAS is an atomic compare-and-swap.
-func (p *UnsafePointer) CAS(old, new unsafe.Pointer) bool {
+func (p *UnsafePointer) CAS(old, new unsafe.Pointer) (swapped bool) {
 	return atomic.CompareAndSwapPointer(&p.v, old, new)
 }