chore(deps): update rust crate annotate-snippets to v0.12.15

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
annotate-snippets	dependencies	patch	0.12.13 → 0.12.15

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Release Notes

rust-lang/annotate-snippets-rs (annotate-snippets)

v0.12.15

Compare Source

Fixed

• Source highlighting no longer misaligns when source contains zero-width or multi-width characters #​400

v0.12.14

Compare Source

Fixed

• Don't trim middle of spans smaller than padding + margin
• Properly handle replacement length mismatches
• Account for "gutter" width when trimming middle of long spans
• Account for left trim when trimming middle of long spans

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