Upgrade clvm_rs and make capture of atom bufs more brief

Pull Request Test Coverage Report for Build 8839470624

198 of 227 (87.22%) changed or added relevant lines in 26 files are covered.
10 unchanged lines in 3 files lost coverage.
Overall coverage increased (+0.01%) to 82.829%

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/classic/clvm/casts.rs	15	16	93.75%
src/compiler/clvm.rs	5	6	83.33%
src/py/binutils.rs	0	1	0.0%
src/classic/clvm_tools/cmds.rs	8	10	80.0%
src/classic/clvm_tools/stages/stage_2/module.rs	15	17	88.24%
src/classic/clvm/serialize.rs	6	9	66.67%
src/classic/clvm_tools/stages/stage_2/compile.rs	26	29	89.66%
src/classic/clvm_tools/stages/stage_2/operators.rs	27	33	81.82%
src/classic/clvm/sexp.rs	3	13	23.08%
<!--	Total:	198	227	87.22%	-->

Files with Coverage Reduction	New Missed Lines	%
src/classic/clvm_tools/cmds.rs	1	68.15%
src/classic/clvm_tools/stages/stage_2/compile.rs	1	87.81%
src/compiler/sexp.rs	8	79.91%
<!--	Total:	10	-->