tailcall chore(deps): update rust crate datatest-stable to 0.3.0

This PR contains the following updates:

Package	Type	Update	Change
datatest-stable	dev-dependencies	minor	`0.2.9` -> `0.3.0`

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

pattern is now optional in the harness! macro. If not specified, the default pattern is r".*" (match all files).

Fixed documentation for include_dir invocations. They must typically be called via include_dir!("$CARGO_MANIFEST_DIR/path/to/data").

Support for embedding data into the test binary via an optional include-dir feature. For more information and recommendations for when to use this, see the readme.

The macro call format has changed to:
```
datatest_stable::harness! {
    { test = fn_name, path = &include_dir!("path/to/data"), pattern = r"^.*$" },
    // ...
}
```
This is both a nicer format for expressing multiple tests, and a signal to indicate the other breaking changes in this release.
Regex patterns now match against the path relative to the include directory, rather than paths with respect to the crate root. This change was made for uniformity with the include_dir implementation.
On Windows, paths are now universally normalized to use forward slashes. This change was made to ensure that test names and paths are consistent across platforms.

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