core: bump SD card capacity to 64MB in emulator

core/embed/unix/sdcard.c

@@ -33,7 +33,7 @@
 #define SDCARD_FILE profile_sdcard_path()
 #endif
 
-#define SDCARD_SIZE (32 * 1024 * 1024)
+#define SDCARD_SIZE (64 * 1024 * 1024)
 
 static uint8_t *sdcard_buffer;
 static secbool sdcard_powered;