Update GSL to v3.0.1 and lib_base

* Use identical types for std::min.

Telegram/SourceFiles/media/streaming/media_streaming_file.cpp

@@ -40,8 +40,8 @@ int64_t File::Context::Seek(void *opaque, int64_t offset, int whence) {
 }
 
 int File::Context::read(bytes::span buffer) {
-	const auto amount = std::min(size_type(_size - _offset), buffer.size());
-	Assert(amount >= 0);
+	Assert(_size >= _offset);
+	const auto amount = std::min(std::size_t(_size - _offset), buffer.size());
 
 	if (unroll()) {
 		return -1;

Telegram/SourceFiles/mtproto/details/mtproto_tls_socket.cpp

@@ -707,7 +707,7 @@ int64 TlsSocket::read(bytes::span buffer) {
 		if (available <= 0) {
 			return written;
 		}
-		const auto write = std::min(index_type(available), buffer.size());
+		const auto write = std::min(std::size_t(available), buffer.size());
 		if (write <= 0) {
 			return written;
 		}