2.1.7-rc01 (#40851)

## Proposed changes

Issue Number: close #xxx

<!--Describe your changes.-->

Co-authored-by: yiguolei <[email protected]>

Author: yiguolei

gensrc/script/gen_build_version.sh

@@ -30,8 +30,8 @@ set -eo pipefail
 build_version_prefix="doris"
 build_version_major=2
 build_version_minor=1
-build_version_patch=6
-build_version_rc_version="rc04"
+build_version_patch=7
+build_version_rc_version="rc01"
 
 build_version="${build_version_prefix}-${build_version_major}.${build_version_minor}.${build_version_patch}-${build_version_rc_version}"