chore(deps): update rust crate string-interner to 0.20.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
string-interner	workspace.dependencies	minor	0.19.0 → 0.20.0

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Release Notes

robbepop/string-interner (string-interner)

v0.20.0

Compare Source

Fixed

• Fixed off-by-one bug in serde support. #​91

Improvements

• Improve documentation about custom hashing. #​90
• Add notification about unchecked resolution for BufferBackend. #​92
• Updated dependencies. #​100 #​101
• Specify Rust MSRV to be 1.65. #​101

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[github-actions]

GNU testsuite comparison:

Skipping an intermittent issue tests/date/resolution (passes in this run but fails in the 'main' branch)
Skipping an intermittent issue tests/pr/bounded-memory (passes in this run but fails in the 'main' branch)
Congrats! The gnu test tests/tail/retry is no longer failing!
Congrats! The gnu test tests/timeout/timeout-group is no longer failing!
Note: The gnu test tests/printf/printf-surprise is now being skipped but was previously passing.