deps: update rust crate smol_str to 0.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
smol_str	dependencies	minor	0.1 -> 0.3

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Release Notes

rust-analyzer/smol_str (smol_str)

v0.3.2

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• Fix SmolStrBuilder::push incorrectly padding null bytes when spilling onto the heap on a
  multibyte character push

v0.3.1

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• Fix SmolStrBuilder leaking implementation details

v0.3.0

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• Remove deprecated SmolStr::new_inline_from_ascii function
• Remove SmolStr::to_string in favor of ToString::to_string
• Add impl AsRef<[u8]> for SmolStr impl
• Add impl AsRef<OsStr> for SmolStr impl
• Add impl AsRef<Path> for SmolStr impl
• Add SmolStrBuilder

v0.2.2

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• Add StrExt trait providing to_lowercase_smolstr, replace_smolstr and similar
• Add PartialEq optimization for ptr_eq-able representations

v0.2.1

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v0.2.0

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v0.1.25

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v0.1.24

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v0.1.23

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v0.1.22

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v0.1.21

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v0.1.20

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v0.1.19

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: Cargo.lock

Command failed: cargo update --config net.git-fetch-with-cli=true --manifest-path crates/proto/Cargo.toml --package [email protected] --precise 0.3.2
error: failed to acquire package cache lock

Caused by:
  failed to open: /home/ubuntu/.cargo/.package-cache

Caused by:
  failed to create directory `/home/ubuntu/.cargo`

Caused by:
  File exists (os error 17)