Protocol Buffer update for release 2.0.x at Tue Mar 16 17:55:16 UTC 2021 (DEV) (#2631)

* Update from https://github.com/corona-warn-app/cwa-protocol-buffers/commit/f58960da0ff4ce487d863c307b674ae6c2dfbbdb

* Update from https://github.com/corona-warn-app/cwa-protocol-buffers/commit/90cbed5ade2e950aa5135a1e3243c18756052f4c



Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>

Server-Protocol-Buffer/src/main/proto/internal/pt/trace_warning.proto

@@ -13,7 +13,7 @@ message TraceWarningPackage {
 }
 
 message TraceTimeIntervalWarning {
-  string locationGuid = 1; // uuid
+  bytes locationGuidHash = 1; // Hash of the Location GUID
   // 10-minute intervals since UNIX Epoch
   uint32 startIntervalNumber = 2;
   // Number of 10-minute intervals to which the warning applies