misc: Update version info for develop branch

Change-Id: Icd409acda0e88852938b2af9f170e2a410e91f8c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/67053
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby 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 = "22.1.0.0";
+const char *gem5Version = "[DEVELOP-FOR-23.0]";
 
 } // namespace gem5