Update httpx requirement from >=0.25 to >=0.28.1

[dependabot]

Updates the requirements on httpx to permit the latest version.

Release notes

Sourced from httpx's releases.

Version 0.28.1

0.28.1 (6th December, 2024)

• Fix SSL case where verify=False together with client side certificates.

Changelog

Sourced from httpx's changelog.

0.28.1 (6th December, 2024)

• Fix SSL case where verify=False together with client side certificates.

0.28.0 (28th November, 2024)

Be aware that the default JSON request bodies now use a more compact representation. This is generally considered a prefered style, tho may require updates to test suites.

The 0.28 release includes a limited set of deprecations...

Deprecations:

We are working towards a simplified SSL configuration API.

For users of the standard verify=True or verify=False cases, or verify=<ssl_context> case this should require no changes. The following cases have been deprecated...

• The verify argument as a string argument is now deprecated and will raise warnings.
• The cert argument is now deprecated and will raise warnings.

Our revised SSL documentation covers how to implement the same behaviour with a more constrained API.

The following changes are also included:

• The deprecated proxies argument has now been removed.
• The deprecated app argument has now been removed.
• JSON request bodies use a compact representation. (#3363)
• Review URL percent escape sets, based on WHATWG spec. (#3371, #3373)
• Ensure certifi and httpcore are only imported if required. (#3377)
• Treat socks5h as a valid proxy scheme. (#3178)
• Cleanup Request() method signature in line with client.request() and httpx.request(). (#3378)
• Bugfix: When passing params={}, always strictly update rather than merge with an existing querystring. (#3364)

0.27.2 (27th August, 2024)

Fixed

• Reintroduced supposedly-private URLTypes shortcut. (#2673)

0.27.1 (27th August, 2024)

Added

• Support for zstd content decoding using the python zstandard package is added. Installable using httpx[zstd]. (#3139)

Fixed

• Improved error messaging for InvalidURL exceptions. (#3250)
• Fix app type signature in ASGITransport. (#3109)

0.27.0 (21st February, 2024)

... (truncated)

Commits

• 26d48e0 Version 0.28.1 (#3445)
• 89599a9 Fix verify=False, cert=... case. (#3442)
• 8ecb86f Add test for request params behavior changes (#3364) (#3440)
• 0cb7e5a Bump the python-packages group with 11 updates (#3434)
• 15e21e9 Updating deprecated docstring Client() class (#3426)
• 80960fa Version 0.28.0. (#3419)
• a33c878 Fix extensions type annotation. (#3380)
• ce7e14d Error on verify as str. (#3418)
• 47f4a96 Handle empty zstd responses (#3412)
• 189fc4b Update CHANGELOG.md, fix typo(s) (#3406)
• Additional commits viewable in compare view

[jthingelstad]

@dependabot rebase