misc,base: Update the version to v21.2.1.0

Change-Id: Ic92d2c6f23b5618896fdf6e19dc1e5f0c6d14238
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/56251
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
diff --git a/src/Doxyfile b/src/Doxyfile
index 8ed8839..8fc9ac7 100644
--- a/src/Doxyfile
+++ b/src/Doxyfile
@@ -31,7 +31,7 @@
 # This could be handy for archiving the generated documentation or 
 # if some version control system is used.
 
-PROJECT_NUMBER         = v21.2.0.0
+PROJECT_NUMBER         = v21.2.1.0
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) 
 # base path where the generated documentation will be put. 
diff --git a/src/base/version.cc b/src/base/version.cc
index 0da32c2..c28f9ad 100644
--- a/src/base/version.cc
+++ b/src/base/version.cc
@@ -32,6 +32,6 @@
 /**
  * @ingroup api_base_utils
  */
-const char *gem5Version = "21.2.0.0";
+const char *gem5Version = "21.2.1.0";
 
 } // namespace gem5