Update Rust crate datatest-stable to 0.2.9

[oxide-renovate]

This PR contains the following updates:

Package	Type	Update	Change
datatest-stable	workspace.dependencies	patch	0.2.8 -> 0.2.9

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Release Notes

nextest-rs/datatest-stable (datatest-stable)

v0.2.9

Compare Source

Added

Previously, the test functions supported were fn(&Path) -> Result<()> and fn(&Utf8Path) -> Result<()>. This release adds additional supported functions:

• fn(&P, String) -> datatest_stable::Result<()> where P is Path or Utf8Path. If the
  extra String parameter is specified, the contents of the file will be loaded and passed in
  as a string (erroring out if that failed).
• fn(&P, Vec<u8>) -> datatest_stable::Result<()> where P is Path or Utf8Path. If the
  extra Vec<u8> parameter is specified, the contents of the file will be
  loaded and passed in as a Vec<u8> (erroring out if that failed).

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