This reverts commit 11445e0f.

Revert "Fix `:arm64_big_sur` bottle ordering."

ENV/shared: widen type for append_path

This reverts commit 66d1b929.

Fix wrong version mapping in `bump-unversioned-casks`.

RbConfig: fix broken MacOS SDK paths 

Add `bump-unversioned-casks` command.

bottle: add tests for json merging

- Extract the json reading from the json merging: it makes the code hard to understand.
This helps for the separation of concerns: the jsons are read in one method;
and merged in a second one
- Added a first test to check the merge function

No change in behaviour was done, this change is just there to increase code coverage
and to prepare for #9315

software_spec: make bottle sorting stable.

cmd/update: improve shallow clone message.

dev-cmd/dispatch-build-bottle: remove testing code.

As `:arm64_big_sur` and `:big_sur` equated to the same version: their
sorting was not consistent. Instead, suffix the tag and use that for
sorting so `:big_sur` is always before `:arm64_big_sur`.

build(deps-dev): bump html-proofer from 3.17.3 to 3.17.4 in /docs

build(deps): bump sorbet from 0.5.6130 to 0.5.6134 in /Library/Homebrew

diagnostic: don't complain about creatable directories that don't exist.

This was accidentally merged in https://github.com/Homebrew/brew/pull/9444.