Recommend macOS 14.5 on workers with NFSv4 build directories

macOS 14.5 addresses two issues that could cause flakiness when build
directories are backed by NFSv4:

- Calling open() in parallel against hardlinks stored in different
  directories could sometimes fail erroneously with ENOENT.
- Traversing a symbolic link is hardlinked to a different location that
  is in the process of being unlinked could also cause ENOENT to be
  returned spuriously.

pkg/proto/configuration/filesystem/virtual/virtual.proto

@@ -22,8 +22,8 @@ message MountConfiguration {
 
     // Run an in-process NFSv4 server and use the kernel's NFSv4 client
     // to expose the mount. This option is supported on macOS starting
-    // with Ventura 13.3 (22E252), though the use of Sonoma 14.4
-    // (23E214) or later is strongly recommended.
+    // with Ventura 13.3 (22E252), though the use of Sonoma 14.5
+    // (23F79) or later is strongly recommended.
     //
     // The NFS server is expected to conform to NFSv4.0 (RFC 7530).
     // Features provided by newer versions of the protocol, such as