[common] Bump protozero to v1.8.1

It has a fix for a buffer overrun.

GitOrigin-RevId: 86b69c61fe7e0d7d0d1baf5581eac97cc8d2aefe

Author: anderco

LICENSE.md

@@ -1138,18 +1138,20 @@ SOFTWARE.
 ### protozero,1.7.1,BSD-2-Clause,Mapbox,https://github.com/mapbox/protozero
 
 ```
-protozero copyright (c) Mapbox.
+Copyright (C) 2022, Mapbox.
+All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are
 met:
 
-    * Redistributions of source code must retain the above copyright
-      notice, this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above copyright
-      notice, this list of conditions and the following disclaimer in
-      the documentation and/or other materials provided with the
-      distribution.
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in
+   the documentation and/or other materials provided with the
+   distribution.
 
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,