.github/workflows: Migrate workflows to Blacksmith runners

[blacksmith-sh]

To whomever may be reviewing this PR,

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What does this PR change?

This PR has been automatically generated by a team member in your GitHub organization using Blacksmith's Migration Wizard, or MigWiz for short. This PR changes the following:

1. Your selected workflows will now run on Blacksmith's 2x faster hardware (e.g., runs-on: blacksmith-4vcpu-ubuntu-2204). Learn more about the different instances available to choose from.
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[blacksmith-sh]

2 Jobs Failed:

Rust / build-json-viewer failed on "Build"

[...]
error[E0658]: use of unstable library feature `inherent_str_constructors`
   --> json_viewer/src/lib.rs:231:21
    |
231 |                     str::from_utf8_unchecked(&content[ctx.cursor..])
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: see issue #131114 <https://github.com/rust-lang/rust/issues/131114> for more information

error[E0658]: use of unstable library feature `inherent_str_constructors`
   --> json_viewer/src/lib.rs:324:21
    |
324 |                     str::from_utf8(
    |                     ^^^^^^^^^^^^^^
    |
    = note: see issue #131114 <https://github.com/rust-lang/rust/issues/131114> for more information

For more information about this error, try `rustc --explain E0658`.
error: could not compile `json_viewer` (lib) due to 2 previous errors
warning: build failed, waiting for other jobs to finish...
Error: Process completed with exit code 101.

Rust / check failed on "Linter"

[...]

error[E0658]: `let` expressions in this position are unstable
  --> lib_cli/src/utils.rs:43:12
   |
43 |         if let Some(next) = cx.args.get(cx.cursor)
   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information

error[E0658]: `let` expressions in this position are unstable
  --> lib_cli/src/utils.rs:44:16
   |
44 |             && let Some(next) = next.to_str()
   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information

For more information about this error, try `rustc --explain E0658`.
error: could not compile `lib_cli` (lib) due to 4 previous errors
Error: Process completed with exit code 101.

---

Summary: 1 failed workflow

• ❌ Rust (2 jobs failed)

Last updated: 2025-09-21 16:45:03 UTC