Co-authored-by: Bjorn Neergaard <bjorn@neersighted.com>

Remove implicit "allow-prereleases" in repository, consider explicit allow-prereleases in show, make search_for test in provider forward-compatible.

refactor(repository): always raise PackageNotFound in _get_page instead of returning None; remove unsuccessful attempt to get pretty name via json-based simple API

performance: cache pages of PyPI repository in the same way as for legacy repository to fix performance regression caused by replacing cachy

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

repository: according to PEP 440 pre-releases should be considered "if the only available version that satisfies the version specifier is a pre-release" (no special handling of "*" constraint)

Co-authored-by: David Hotham <david.hotham@blueyonder.co.uk>

MockEnv should not use paths of SystemEnv for paths that may be written to

We can now lock using the new lock file format as Poetry 1.2.2 has spent
sufficient time in the wild. A re-lock is also advisable as the full
release of Python 3.11 is here and we want to make sure to use any new
wheels in CI.

provider: discard any marker dependencies if the resulting marker after merging is empty, not compatible with the project's python constraint or not compatible with the set environment

subclasses of ValueError like UnicodeEncodeError have to be propagated (see #6784)

Co-authored-by: Randy Döring <30527984+radoering@users.noreply.github.com>