misc: Update the version to v21.1.0.1

Change-Id: I64055b88bc3ba3f1e104ad796abec6ff4a4b3b11
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/50031
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

src/base/version.cc

@@ -32,6 +32,6 @@ namespace gem5
 /**
  * @ingroup api_base_utils
  */
-const char *gem5Version = "21.1.0.0";
+const char *gem5Version = "21.1.0.1";
 
 } // namespace gem5