Adding upstream version 2.52.6.

Signed-off-by: Daniel Baumann <daniel@debian.org>

utils/convert_b2s_old.go

@@ -0,0 +1,14 @@
+//go:build !go1.20
+
+package utils
+
+import (
+	"unsafe"
+)
+
+// UnsafeString returns a string pointer without allocation
+//
+//nolint:gosec // unsafe is used for better performance here
+func UnsafeString(b []byte) string {
+	return *(*string)(unsafe.Pointer(&b))
+}