When accessing a pointer from a `const` typed-memoryview, make sure the
pointer itself is also typed as `const` to avoid compiler warnings about
discarding `const`.

* In `vlen`, define and use `const` `HEADER_LENGTH`

Previously `HEADER_LENGTH` was defined in `vlen`, but not as `const`. So
it could concievably be changed. While this didn't happen in practice,
it does mean the compiler needs to generate code to check and use this
value throughout.

However `HEADER_LENGTH` is intended to be `const`. So define it as such.
That way the compiler can generate more efficient code when using it.
Further define it in terms of the type whose size it references (namely
`uint32_t`). Also make sure that type is `cimport`ed for referencing.

Finally consistently use `HEADER_LENGTH` when it applies throughout
`vlen`. Previously `HEADER_LENGTH` was sometimes used and in other
cases the value `4` was used. So consistently use `HEADER_LENGTH`
throughout for improved code clarity. Now that `HEADER_LENGTH` is marked
`const` this is equally efficient.

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.9.9 → v0.11.4](astral-sh/ruff-pre-commit@v0.9.9...v0.11.4)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* Make `license` SPDX compatible

* Use `project`'s `license-files` entry

* Package licenses for Blosc and its dependencies

* Add news entry for license packaging fixes

* Require Setuptools 77+

Needed for newer `license*` metadata handling.

* Drop deprecated trove-classifier for license

Bumps [pypa/cibuildwheel](https://github.com/pypa/cibuildwheel) from 2.23.0 to 2.23.2.
- [Release notes](https://github.com/pypa/cibuildwheel/releases)
- [Changelog](https://github.com/pypa/cibuildwheel/blob/main/docs/changelog.md)
- [Commits](pypa/cibuildwheel@v2.23.0...v2.23.2)

---
updated-dependencies:
- dependency-name: pypa/cibuildwheel
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: David Stansby <[email protected]>

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.11.4 → v0.11.8](astral-sh/ruff-pre-commit@v0.11.4...v0.11.8)
- [github.com/scientific-python/cookie: 2025.01.22 → 2025.05.02](scientific-python/cookie@2025.01.22...2025.05.02)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* make Zlib codec pickleable

* add test

* show __init_subclass__ can work for Zlib

* refactor the BytesBytes Codecs to use __init_subclass__

* remove snake_case function

* Chuck's suggestions

Co-authored-by: Chuck Daniels <[email protected]>

* redefine Bitround

* remove debugging prints from test

* redefine Shuffle

* redefine Delta

* redefine FixedScaleOffset

* Quantize

* PackBits

* AsType

* redefine checksum codecs

* array to bytes codecs

* remove todo

* remove dynamic constructors

* release note

* remove unneeded imports

* style: pre-commit fixes

* remove unused type ignore

---------

Co-authored-by: Chuck Daniels <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Davis Bennett <[email protected]>

* (fix): ensure no `typesize` in the `Blosc` config

* (fix): `typesize` less than 1 test needs to set private member

* (chore): document change

* (fix): not link for `get_config`

Co-authored-by: Davis Bennett <[email protected]>