in 3c7af287, cqlsh's reloc package was marked as "noarch", and its
filename was updated accordingly in `configure.py`, so let's update
the CMake building system accordingly.
this change should address the build failure of
```
08:48:14 [3325/4124] Generating ../Debug/dist/tar/scylla-cqlsh-6.1.0~dev-0.20240629.60955ead75ef.noarch.tar.gz
08:48:14 FAILED: Debug/dist/tar/scylla-cqlsh-6.1.0~dev-0.20240629.60955ead75ef.noarch.tar.gz /jenkins/workspace/scylla-master/scylla-ci/scylla/build/Debug/dist/tar/scylla-cqlsh-6.1.0~dev-0.20240629.60955ead75ef.noarch.tar.gz
08:48:14 cd /jenkins/workspace/scylla-master/scylla-ci/scylla/build/dist && /usr/bin/cmake -E copy /jenkins/workspace/scylla-master/scylla-ci/scylla/tools/cqlsh/build/scylla-cqlsh-6.1.0~dev-0.20240629.60955ead75ef.noarch.tar.gz /jenkins/workspace/scylla-master/scylla-ci/scylla/build/Debug/dist/tar/scylla-cqlsh-6.1.0~dev-0.20240629.60955ead75ef.noarch.tar.gz
08:48:14 Error copying file "/jenkins/workspace/scylla-master/scylla-ci/scylla/tools/cqlsh/build/scylla-cqlsh-6.1.0~dev-0.20240629.60955ead75ef.noarch.tar.gz" to "/jenkins/workspace/scylla-master/scylla-ci/scylla/build/Debug/dist/tar/scylla-cqlsh-6.1.0~dev-0.20240629.60955ead75ef.noarch.tar.gz".
```
Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
Closesscylladb/scylladb#19710