Regenerate archives

These are the changed archives generated by fixture scripts by
running `cargo nextest run --all --no-fail-fast` on an Ubuntu 22.04
system. (All tests passed, as expected.)

The changed archives divide into two cases. First, there are those
that are changed due to the stylistic changes to heredocs in the
preceding commit 2641f8b (which change the CRC32 hashes of the
scripts and thus cause archives to be regenerated):

* gix-index/tests/fixtures/generated-archives/v2_icase_name_clashes.tar
* gix-worktree-state/tests/fixtures/generated-archives/make_dangling_symlink.tar
* gix/tests/fixtures/generated-archives/make_rev_spec_parse_repos.tar

Second, there are those that were already being generated when the
tests were run, rather than using the committed archives:

* gix-diff/tests/fixtures/generated-archives/make_diff_repo.tar
* gix-odb/tests/fixtures/generated-archives/make_repo_multi_index.tar

These were being generated every time that `nextest` command was
run on Unix-like systems (or at least GNU/Linux and macOS). I don't
know why this was happening, but it suggests a bug somewhere.

- That oddity precedes 55c635a (GitoxideLabs#1425), I just didn't commit the
  two archives not related to the changes being made there at that
  time, since unlike here, that was not a cleanup PR.

- It precedes, or mostly precedes, the change in dcab79a (GitoxideLabs#1415). At
  least the first of those archives, make_diff_repo.tar, already
  behaved this way in its .tar.xz form before that, as noted in:
  GitoxideLabs#1361 (comment)