build(deps): bump bedrock2 from `0fa3944` to `83268c3` #642

Job	Run time
build (8.18.0, coq-8.18.0 libcoq-8.18.0-ocaml-dev, ppa:jgross-h/many-coq-versions-ocaml-4-11)	3m 32s
build (master, coq libcoq-core-ocaml-dev, ppa:jgross-h/coq-master-daily)	3m 46s
	7m 18s

Provide feedback