Update to 2024a

[Algunenano]

Full diff with upstream/master:

diff --git a/src/time_zone_info.cc b/src/time_zone_info.cc
index cc4b001..13edb0d 100644
--- a/src/time_zone_info.cc
+++ b/src/time_zone_info.cc
@@ -818,6 +818,26 @@ bool TimeZoneInfo::Load(ZoneInfoSource* zip) {
   return true;
 }
 
+namespace {
+
+bool CheckTimeZoneName(const std::string& name) {
+    const char * forbidden_beginnings[] = {"/", "./", "~", ".."};
+    for (const auto & pattern : forbidden_beginnings) {
+        if (name.starts_with(pattern)) {
+            return false;
+        }
+    }
+
+    if (name.find("../") != std::string::npos) {
+        return false;
+    }
+
+    return true;
+}
+
+}  // namespace
+
+
 bool TimeZoneInfo::Load(const std::string& name) {
   // We can ensure that the loading of UTC or any other fixed-offset
   // zone never fails because the simple, fixed-offset state can be
@@ -828,6 +848,12 @@ bool TimeZoneInfo::Load(const std::string& name) {
     return ResetToBuiltinUTC(offset);
   }
 
+  // Check if timezone name contains forbidden patterns
+  // that can lead to arbitrary file open.
+  if (!CheckTimeZoneName(name)) {
+      return false;
+  }
+
   // Find and use a ZoneInfoSource to load the named zone.
   auto zip = cctz_extension::zone_info_source_factory(
       name, [](const std::string& n) -> std::unique_ptr<ZoneInfoSource> {
diff --git a/src/time_zone_lookup.cc b/src/time_zone_lookup.cc
index 75ab65d..a36a506 100644
--- a/src/time_zone_lookup.cc
+++ b/src/time_zone_lookup.cc
@@ -18,11 +18,6 @@
 #include <sys/system_properties.h>
 #endif
 
-#if defined(__APPLE__)
-#include <CoreFoundation/CFTimeZone.h>
-#include <vector>
-#endif
-
 #if defined(__Fuchsia__)
 #include <fuchsia/intl/cpp/fidl.h>
 #include <lib/async-loop/cpp/loop.h>
@@ -197,20 +192,6 @@ time_zone local_time_zone() {
     zone = sysprop;
   }
 #endif
-#if defined(__APPLE__)
-  std::vector<char> buffer;
-  CFTimeZoneRef tz_default = CFTimeZoneCopyDefault();
-  if (CFStringRef tz_name = CFTimeZoneGetName(tz_default)) {
-    CFStringEncoding encoding = kCFStringEncodingUTF8;
-    CFIndex length = CFStringGetLength(tz_name);
-    CFIndex max_size = CFStringGetMaximumSizeForEncoding(length, encoding) + 1;
-    buffer.resize(static_cast<size_t>(max_size));
-    if (CFStringGetCString(tz_name, &buffer[0], max_size, encoding)) {
-      zone = &buffer[0];
-    }
-  }
-  CFRelease(tz_default);
-#endif
 #if defined(__Fuchsia__)
   std::string primary_tz;
   [&]() {

Basically #1 + #7